Life is just something that occurs, and that we happen to be a part of. There's no inherent purpose to it, only personal and societal goals.
oldish post, but ia.
Or maybe I just hate not knowing the answer to things. I remember a teacher getting mad at me once for saying there was no point in speculating what happens after death because nobody knows, and honestly I'd rather not know because I don't want it to effect the way I live. Same with this question. Seems kind of pointless for me to ponder, though far be it for me to take that away from those who want to.