Most of us choose God because it just seems more "right" to do. We grew up that way, and now people are starting to question that. We still don't know about all this stuff. The universe was formed 15 billion years ago, and is expanding everyday. We can look out the edge, and that shows us what it was 15 BYA (Neat trick - number of lightyears away you look = number of billiobs of years ago it was). We have no way of knowing this stuff, as of now. I've just learned not to care anymore.