I am probably even in more danger of getting banned than Mouse Clicker, as I have already been given my first and only warning by Rick, but I am just going to add my bit here.
I am an atheist/agnostic. I say both, because I allow for a possiblity of there actually being a God, but my magic 8 ball says that all signs point to no, making me effectively an atheist, and in a theological debate, I will always side with the atheists.
My main reason for hating religions is that they don't encourage enlightenment. Religions tell you exactly what's what, and don't allow for any departure from what they tell you. What they tell you is the "truth", and if you disbelieve them, you are a sinner and stand a good chance of going to hell for that. If I go to hell for that, then I don't want to go to heaven. Every astoundingly intelligent man in history it seems has been attacked by the Church. Galileo, Copernicus, Darwin, Newton, and the list goes on and on. The majority of wars and acts of genocide in the world have been brought on by intense religious beliefs. Almost EVERYONE will attack religions. The difference between an atheist and a theist is simple. The theist will attack all religions that aren't his own, and will sometimes kill to protect his god and beliefs. The atheist will attack them all, but I have yet to see a case where an atheist would kill to protect his belief.
I just have a problem with religions because they brainwash their followers with a bunch of BELIEFS that they are expected to treat as fact. I don't think this is healthy considering the side effects that are all too common. Ask any fundamentalist Christian about Darwin for a case example of what I am talking about.