Personally I'm hoping we get to the point where we can reverse aging as soon as possible. From what I understand even if it's not perfect at first, it'll let us buy time until the technology is sufficient. Like it can only reverse age you by ten to twenty years, in ten to twenty years the technology is likely to be better so you can do it again for a better result.
Lots of shit is gonna have to change at that point, the dangers of overpopulation is going to explode for example, but it'd be nice if we could end up in an immortal space future. Suns about to go? Alright time to move.
The only real end would be murder, accidents, and the heat death of the universe.