I used to think of it quite a lot even though I knew it was pointless.
But accepting that it's utterly unavoidable, even if you rule out aging, and finding some sort of meaning with life made me feel a lot better about it and not think so much.
EDIT: Also, for some reason I think that the human mind would react negatively if you were alive for too long. So I don't really want to live forever. I still hope for an afterlife though, and figure that the equivalent of your soul are better suited for eternity than your brain.
But accepting that it's utterly unavoidable, even if you rule out aging, and finding some sort of meaning with life made me feel a lot better about it and not think so much.
EDIT: Also, for some reason I think that the human mind would react negatively if you were alive for too long. So I don't really want to live forever. I still hope for an afterlife though, and figure that the equivalent of your soul are better suited for eternity than your brain.