Growing old is a pathetic thing. It is full of limitations and reduction. It happens to us all, I know; but I think that it might not have to. I think it happens to those of us who request it. And in our current mind-set, our collective ennui, it is what we have chosen to do. But one day a mutant child will be born who refuses to age, who refuses to acknowledge the limitations of these bodies of ours, who lives in health until he is done with life, not until his body no longer supports him. He will live for hundreds of years, like Noah. Like Moses. This child's genes will be passed to his offspring, and more like him will follow. And their genetic makeup will supplant the genes of those of us who need to grow old and decay before we die. I believe that one day it will come to pass; however, such a world is beyond my purview.
Garth Stein, The Art of Racing in the Rain
aging