"The first person to live to [200, 300, 500, 1000] has already been born"

[Excited Penguin]

That goes against the scores of people who sign DNR's..or who plead with their relatives to let them go "the next time".  My great grandfather was tired of life, for example.  We let him die the second time he went down..he cussed us out for weeks the first time for calling an ambulance.  

I think it's easy, with just 20 or 30 years of life under ones belt..particularly in the US (or any 1st world country) to imagine that you'd want to live forever.  Well, why not, how bad can it have become....thusfar.

If you know you're going to die soon anyway and there's no chance of you getting better and you're suffering, yes. But if you know there's a very good chance that you are going to get better and the doctors will keep adding years to your life and solve all the issues that are making your body sick and reverse the ageing process, then that's a no brainer. I'm sure people will still have the choice to not take that path, though, of course.

But we're not talking about being old and extending that for decades. We're talking about actually solving everything that makes old age such an awful thing. So there's not really much to talk about there, other than resources, birthing rates and all sorts of other things.