Being an asshole
Lack of faith
The list goes on and on and on... When you think about it, its amazing how many gods we serve. I'm not innocent in this, I see a lot of which I sing praises to all the time... But for anyone to go off and say that they do not believe in a "god," you are a fool. If breathing wasn't an automatic thing for most of us, we would be all about it as well... So, for anyone who says they are an "athiest," prove it.