Ok, I'm going to just say. Not to offend, or draw a line in the sand, or look like a know-it-all. But I'll say it, just to inspire conversation.
It's obvious, it really is. The existence of God is overwhelmingly obvious. I'll even go a step further and say that the identity of God is the Christian God of the Bible, and that's obvious too.
The truly unfortunate thing is, if you don't already realize this, its likely because you refuse to realize it, and you're probably going to stop reading abour right now. But if you're open-minded enough to consider the possibility of God...