Let’s look at death from a conworlding perspective.
If you took a vote, I’m pretty sure most people would be against death. Early death is always a tragedy, and most religions offer some (more or less implausible) consolation: reincarnation, resurrection, reabsorption into Atman, or perhaps hanging around in the form of a shade or ghost. (These are usually depicted as mentally disordered, sometimes due to their misdeeds, sometimes as just a consequence of being dead.)
Helping to take care of parents in their ’90s has given me a different view. This will probably horrify any readers under 35, but it feels like the last years of life prepare both the person and the survivors for death. Quality of life declines, mobility lessens, physical problems become overwhelming. By the time my Mom died, it didn’t feel like a tragedy, more like an ending. She certainly wouldn’t have liked to just be prolonged in the state she was in the month before she died. And dying in old age after a fulfilling and busy life, surrounded by family, isn’t the worst thing ever.
With my Dad, of course I want him to keep going as long as he gets enjoyment out of life. But as I mentioned, he’s declining in both body and mind. Old folks are notorious for keeping to their habits and likes… he’s no longer interested in finding new music, trying out new cuisines, going to new places. He’s no longer adapting to social change… he told me disapprovingly of a couple he knows that shacked up together before marriage. That is, before their marriage which has lasted very nicely for fifty years. He does read some new things, but there’s not much that changes his mind anymore.
Now, this is a manageable problem in the world as it is. But what if people lived twice as long? Or six times as long, as in the Incatena? Would you really want most people to be conservative old cranks for 85% of their lives?
The ancient Greeks had a myth about a man, Tithonus, who was granted immortality but forgot to ask for eternal youth. So he ended up immobile and senile. Oops!
One futuristic approach to the problem: get yourself uploaded to a computer, so you can stay alive indefinitely. I think it’d be horrible to give up food, sex, exercise, and the rest of our bodily experience, even if we posit that you can still somehow retain your visual qualia. But I can see the attraction of wanting to find out what’s next. Perhaps you could hibernate for fifty years at a time, then wake up and avidly consume all the pop culture that’s been created since last time. Avoid Sturgeon’s Law and read just the best 10% of stuff, forever!
However, I suspect the plan would fall apart in under 200 years. How much really grabs us from that long ago? We do read stuff that old, of course, but it’s only a tiny fraction of our mental diet. The past is a strange world that takes some effort to immerse ourselves in– when it doesn’t repel us with a mindset that’s now confusing, boring, or vile. 400 years ago is even harder to grok, and 1000 is an alien world. And looking back, I’d maintain, is far easier than looking forward. We’re exposed to the past as history and literature– we can read Jane Austen or Jonathan Swift or Molière far easier than they’d be able to understand us.
Imagine Jules Verne, for instance, trying to make sense of a Laundry novel. The prose itself might not be too difficult. The idea of monsters and government bureaucracies would be understood. But he’d miss the allusions to Lovecraft and spy novels, and references to the Cold War and computers would require a whole education to follow. Something like an episode of The Simpsons would probably produce complete befuddlement.
I’m not saying it couldn’t be done, just that it’d require quite a bit more work than it sounds like. And just visiting the future in one-year reading binges, you’d never really fit into the culture– you’d be an increasingly alienated dinosaur.
In the Incatena, I posit that the problem is solved by people loosening up their brains once a century or two. Basically, you lose a bunch of memories, fade out some of the more habitual neural pathways, recover some of the intellectual flexibility (and ignorance) of adolescence. Maybe change your body type and/or sex while you’re at it. You want to be you just enough to feel continuity, but not enough to become a curmudgeon. (And becoming an AI, though it’s an option, is viewed as a form of death.)
Evolution, we could say, has found a simpler solution yet: reproduction. You get new people with the genetic heritage of the species, but neotenous and adaptable to the current environment.