It's clear from many of these discussions that there is an unbridgeable discursive gap between the "why on earth would you ever want to die" and the "life would become an intolerable nightmare" groups. Realistically if we do find ways to extend life then people will take advantage of them and all kinds of weird consequences will follow, and the two groups will argue about just how long life should be while trying not to die. Cosmically speaking all that will happen is that human development will slow down: after all if it requires a generation of human scientists to die so that new ideas can be accepted then [1]...
My personal preference is pro-death. I enjoy life but it's important to my enjoyment that there is a terminus. The fact that it's not under my control also makes me feel calmer - it's out of my hands.