An interesting problem with immortality is that it would be very difficult to remain conscious forever. Like driving the car, everything would eventually become automatic, and you'd gradually zone out and go on autopilot. Nothing is unexpected if you live long enough.
@BartoszMilewski - In his novel "Permutation City", Egan has some characters deal with this by having an 'exoself' that occasionally steps in and sets new psychological parameters to keep things interesting. Even this could get boring *eventually*, but it's an interesting idea. For example one character decides to make themselves fascinated by carpentry until they can reliably craft wonderful furniture. Then the exoself steps in and the character switches to entomology. There is still an odor of futility here.
@johncarlosbaez In Surface Detail, Iain Banks describes virtual hells. I think hells are easier to imagine than heavens. So in Banks' Culture Series, people whose wishes can all be satisfied by technology eventually chose to die (or "Sublime," as in Hydrogen Sonata).
@BartoszMilewski @johncarlosbaez The Culture has 400 years cutoff, which seems... arbitrarily little to the point of being "deathist".
