I never understood the not wanting to live forever thing. Even if "living forever" meant "turning into a drooling old person forever" (which I don't usually construe it to mean), I would much rather live forever as a drooling old person than die. Like, hook me up to the internet and I will happily be a drooling old person forever.

"But you'll see everyone you love die!" Sucks yeah, but unfortunately you're probably going to see a lot of people you love die during your normal lifetime anyway, so *shrug*