Here's my theory on "God". So, you, rational person that you are, believe in evolution, right? This means everything came from SOMEthing. But, we weren't always here, were we? So, at some point, there was nothing, and then BOOM! an atom of carbon appeared. Nothing, being nothing and therefore doing nothing, didn't create this, so something non-physical must ave created this. Something that's smarter than humanity. I call this something God. Now, I'm going to assume that this something is infinately wise. This means, that it has seen every possible path that humanity could take, and knows how to create new ones. But, because this something knows everything, how long did it take for it to make sure humanity wouldn't screw itself? My answer is...less time that we have a unit for. So, at this point in my reasoning, God no longer exists. More troubling is the fact that, maybe, just maybe, God doesn't know everything after all. You see, because god knows everything, God has never had the concept of not knowing something. So, if God doesn't actually know EVERYthing, but thinks it does, we could be screwed, and with no God to help us.
No it gets tricky. God has never known a question. But, through knowing humanity perfectly, God knows what a question is, but has never felt one. This leaves God with the QUESTION, "what does a question feel like?" So, God now knows what it is to not know something, and therefore is left with the possibility that it doesn't know everything, and can't accurately plan for the future. So, God has to leave something in charge to make sure humanity doesn't kill itself. And, the only thing that God can leave behind, that it can trust completely to react to whatever humanity can throw at it, is God. hence, God exists.