Most atheists (if not all) do NOT not believe in God. They just hate Him and people who love Him.
Not trying to start a fight on purpose, but it appears to me that there are far more atheists out there that we don't even know about than there are what I were refer to as "hatetheists". Those are the ones who have come to their own conclusions, but are civil human beings who have no desire to humiliate or otherwise disparage others for their own beliefs.
We mostly only hear from the rabid assholes who just happen to be atheists. In fact, I'd bet there are quite a few atheists right here at the cave, they just happen to NOT be assholes. there really are a lot of them out there, we just don't hear from them. they aren't offended by your mere presence because they are not emotionally weak or insecure.
Rockhead is just a textbook example of someone emotionally insecure in his own beliefs to the point where he feels he must hate and humiliate others in his quest to convince himself that he's not the inferior asshole that we all see him as.
But there it is... he just reinforces our conclusions every single day