VJ-23X interrupted. "We can thank immortality for that."
"Very well. Immortality exists and we have to take it into account. I admit it has its seamy side, this immortality. The Galactic AC has solved many problems for us, but in solving the problems of preventing old age and death, it has undone all its other solutions."
"Yet you wouldn't want to abandon life, I suppose."
"Not at all," snapped MQ-17J, softening it at once to, "Not yet. I'm by no means old enough. How old are you?"
"Two hundred twenty-three. And you?"
"I'm still under two hundred."
From Isaac Asimov's "The Last Question", http://www.multivax.com/last_question.html
Of course, that's what I think now at 36. Maybe by the time I'm 80 I'll be thinking, "reckon I can handle a few more years...."
Put another way, the dream is to give you 5 decades of being 25, not 5 decades of being 85.