I certainly want to. My grandmother on my dad's side is already 102; the LEAST I can do is live to be 100. :)

My mother is turning 65 this year and made the comment her mind hasn't aged one bit and it's the body that's the problem (although she's in much better shape than many).  People's minds shouldn't be forced to shut down just because their bodies wear out.  I think aiming to live 100 years is something we should all be able to aspire to and is not an unrealistic goal - especially seeing as many already do with little technical intervention whatsoever.