I find this topic interesting because talking about aging is simultaneously talking about death. With death comes the unknown and with the unknown often comes spirituality. It's a little comical how people are so quick to bash this idea of immortality. They say that they would rather go to heaven or that it would be such a lonely experience. They never take into account that even a million years of extended life would be nothing more than a blip on the 4 trillion that the earth has endured or the 13.75 trillion that the universe has mustered.
Naturally, this doesn't take into account the free will of a human being. If you want to end it, you should have the right to end it (especially if you're eternal). Anyway, watch this documentary (76 min.) when you have time. He gets pretty concrete with his ideas within the first 20 min.