Being Atheist isn't like having a religion. There is no philosophical bent. You either believe in some sort of spirituality, or you don't. If you don't, you're an Atheist. If you do, you're not. If you're wishy-washy, you're Agnostic.

People like Dawkins and Hitchens are bad for Atheism. Atheism is not a religion. Atheism is the opposite of religion. These guys act more like preachers defending their faith than they do rational human beings.