Let's be clear, the OP is not "preaching against atheists" at all. It's preaching against "God-haters" who are completely a different breed. My sister, a devout Christian, considers ME an atheist. She will tell you that I am going straight to hell when I die. I love her, she's my sister, I respect what she believes, I just don't agree with it.
God-haters often hide behind the Atheist brand, or in silly boob's case, the Atheist Agnostic brand. They believe this lends an air of credibility to what they have to say, which is mostly a hate-filled denigration of God-believers. It's important to know the God-haters are not really Atheists, they believe in God, they just hate God.
You mistake hate for being passionate. Why is my passion hate but a christian who's just as loud and proud about their beliefs not? Hypocrite.
Listen once and for all fool. I don't claim to know what is on the other side of black holes. Because of that fact, I'm not a full blown atheist. I consider someone who is 100% sure there is no god to be just as ignorant as someone who is 100% sure there is one.