Introduction
I strongly believe that
(P1) "Some people would enjoy eternal health more than a finite health,"
and
(P2) "It is at least, morally neutral to accept eternal health,"
where 'eternal health' I mean either agelessness or true immortality. While I believe that stopping aging is in principle possible (although, sadly, we are not very close to this reality) I can't really imagine how one could be truly invulnerable to damage. That places this discussion very much on hypothetical grounds, but I still think it's a discussion worth having.
I think that (P1) - (P2) are perhaps the most easily defensible positions ever. Essentially they are the same as saying
"Some people would enjoy continuing to breath and it is, at least, morally neutral for them to do so."
If you're now aware of your own breathing, apologies.
There are many common objections to (P1) - (P2) and I will give my answers to them, but those answers will be brief and are included only for the sake of completeness. This is because I doubt there is any benefit to looking at this as an issue which could be resolved through reasoning . The 'debate' about the desirability of immortality, about whether mortality or immortality is 'better', has gone on for a very long time and you'll find staunch defenders of either side both among professional philosophers and your neighbors. See, for instance, the classic essay by Williams (1973) (which argues immortality should be universally undesirable because an immortal life would be meaninglessness) and its numerous citations, or this YouGov poll which suggests among the general British public the split is roughly even.
If a sound and valid argument was going to persuade objectors, it would have done so already. Therefore, although I will comment on the larger debate, my main intention is to invite objectors and proponents into conversation. I believe that there is an emotional core to the debate, which must be understood made explicit, if we are to gain anything useful out of it.
This first part of this essay focuses on (P1). Since it is more personal in scope, it's more greatly affected by subjectivity and thus the most likely to lead us to the emotional core. The next part will focus on (P2) which requires greater nuance to discuss.
Firstly, however, since I am going to try an engage with the emotional core of the opposition, it is only fair that I also lay out my own emotional core. If you're more interested in academic philosophy arguing for why immortality would be desirable, I rather like this essay by Corliss Lamont.
Why I Don't Want To Die
Life is short and there's lots to do
For as many experiences that you get to have, there are infinitely more you do not get to have. You have to continually make choices and reject life paths, sometimes permanently. If you dedicate 8 hours per day to practicing mathematics in your 20s, then you don't get to practice piano. If you read one book a week until the day you die, you still haven't read most books (nor even most good books).
Just as it's euphoric to become yourself and embrace the pleasures of life, it's agonising to think about what you might be missing. We come to terms with this, the same way we come to terms with any other tragedy. But what if this wasn't necessary? What if you could spend a lifetime becoming a musician, another focusing on activism, and another on raising a family? What if you wanted to get into game development at age 95 and that was fine because you still had eternity ahead of you?
I love living.
You meet and talk to and sometimes kiss interesting people. You see an adorable dog on the train. You go on long walks in the woods, or watch the stars, or tell dirty jokes with your friends at a New Years party. You eat the best strawberry you've ever tasted. You fall in love and out of love over and over again. You cry because someone gave you a gift you've always wanted. You yearn and obtain and fail to obtain and yearn all the harder for it.
You see hope win against the forces of evil. You see evil rise and somewhere you find within yourself the will to fight back, and push back, and bring back goodness to the world.
You condense all these experiences into art which you can share, and experience other people's lives through their art too. You cry at a beautiful line in a novel, or scream at a twist reveal in a movie.
And then ... you wake up the next day and realise there's so much more life still in front of you, and you're so immensely grateful.
Transcendent experiences are rare and they're what I love for.
Once, just a few weeks before I got married, I was laying on my wife's lap as they sang to me. I felt as if all of Heaven had been condensed into that moment as their melody stitched together the parts of my soul I didn't even know were frayed.
Even though I want to live forever, and I think death is a tragedy, I feel as if my life has been worth it already because of that one moment. These kind of transcendent experiences are pretty rare and the longer you live the more you have.
Naturally, given these beliefs, I struggle to see why anyone wouldn't desire an immortal life. That said, I can appreciate there are certain risks to immortality that not everyone would be comfortable taking. What I truly thing is absurd is the suggestion that no-one would enjoy immortality, that it is fundamentally a bad thing for an individual to experience. That's kind of like saying no-one would enjoy vanilla ice-cream.
In the interest of trying to piece apart the emotional core that desire, let's take a tour of the common arguments against the desirability immortality.
The arguments against the desirability of immortality
These arguments essentially have the same core problem: an immortal life would be overall so bad for you as an individual, whoever you are, and so (P1) is false.
Seeing loved ones die.
Argument: If you (and only you) get to live forever then you'd have to contend with an infinity of death.
Response: It isn't a necessary part of the premise that only you get to be immortal. Your friends could be too. And yes they might refuse, but if the only thing holding each of you back from living forever is that the others might not, then there isn't really anything holding you back.
Also, even in our finite lives, we see loved ones die. I don't believe this makes a finite life not worth living, so why should it make an infinite life not worth living? Indeed, if your immortality means your loved ones never need to worry about you dying, isn't that perhaps a bonus?
If indeed we're arguing about a particular and unshareable immortality, I agree there would be a tinge of tragedy to that. I still think it would be worth it, if not only because in this case you have infinite time to try learn alternative routes to immortality.
Boredom/meaninglessness
Argument: Eventually, you'd run out of things that give you any joy and would spend eternity bored. Even if you did manage to merely entertain yourself, you'd then run out of meaningful things to do.
Response: This is one I really struggle to understand. Regarding pure boredom, there are infinitely many things to do (infinitely many books to read, for one). Regarding meaninglessness - I have enough meaningful pursuits to last me several lifetimes, and I doubt that I would ever run out since new ideas are constantly emerging. Nevertheless, one could say that "I doubt" isn't really good enough when it comes to a choice with such potentially dire consequences.
To those that are concerned that there are only finite reserves of meaning, I say do not worry. Spending time with friends is meaningful now and nothing would make it not meaningful. Making art and developing scientific ideas is meaningful now and forever. The universe and human mind together are a meaning producing engine.
What if you get stuck in a hole for 10^6 years and go mad?
Argument: An infinite life means that, with high probability, you'll eventually end up in a very bad situation for a very long time.
Response: Firstly, the idea that given an infinite amount of time, everything will happen is a fallacy. However, I accept that given an infinite amount of time it's overwhelmingly like that something terrible will happen. However, isn't it equally reasonable to say that an infinite life also entails the certainly something very wonderful will happen? In that case, an immortal life is offers greater risks but also greater rewards.
I am personally willing to tolerate the risk. After all, even in my probably finite life, I'm not about to avoid all pleasure for the promise of safety.
It is my personal opinion the rewards of life scale (at least) as fast as the risks as lifespan increases. However, I can definitely understand that others might see it differently.
Heat death of the universe.
Argument: Eventually the universe will be a cold-dead void and you'll be all alone. The suffering/boredom you experience over that final eternity nullifies any benefit you might experience up to that point.
Response: This is not really a pure argument against (P1). Given that the universe will experience heat death, an immortal life is unphysical and so impossible. Therefore we could take this argument as ma rejection of the idea that an immortal life is even conceptually coherent, rather than a rejection of its desirability.
And to that I say ... sure. I mean, that's so far in the future that I have no idea what we'd be able to do by then. But I know that it would be a tragedy if all life was doomed to end.
A more fun response is to accept that apart from your immortality the universe is physically consistent. Do your finger nails still grow? Your hair? Does your microbiota reproduce and do you salivate? Are you still generating heat? Then as long as you live, the universe is not dead. You're a perpetual motion machine, baby, and moreover a font of hope. From you, new worlds will emerge.
Conclusion
After considering these arguments, I'd like to propose that the emotional core of objections to (P1) is pessimism. It's the belief that fundamentally life is unpleasant and the future is scary.
There is, for sure, unpleasantness in life, and some people are given an unfair share. But to believe that given infinite time, one has no hope to recover is to believe in a universe that is not just unfair, not just uncaring, but truly cruel. Is this how you see the world? Am I close or way off the mark? If I am close, I'm sorry that you've suffered so much that it's made you give up. It seems all the crueler to me if life is both finite and unpleasant because it means those unpleasant years are something one can never get back. I hope, in the time you have left, that you can at least make up for them.
I acknowledge that I've probably suffered less than the average person, and that may well be the cause of my optimism which is naturally the emotional core of (P1). However, I'm not so sure; perhaps the seed of optimism was planted in my materially pleasant childhood but it blossomed in the moments when I was powerless, alone, and faced with an uncertain future. I wish only that I could propagate this feeling.
