Why do I write Science Fiction?

Basically, that's what I like.  I read science fiction, I watch science fiction shows and movies, hell, most of the ideas I come up with are science fiction, that's why I write so much of it.  But since that's too simple an answer, here's something a little more deeper, for when I'm famous enough to be a tad pompous. 

Several years ago I came up with a saying that sums up the most basic truth I know: Humanity has but two choices, evolution or extinction.  We could become extinct by killing o...