Why Do Atheists Criticize People's Beliefs?

[CapnAwesome]

Some here at AF have expressed puzzlement at why atheist criticize the Abrahamic religions just because we don’t believe in them. One even likened it to his criticizing Zeus.

As I said in th tat thread, if zeusian evangelists tried to get public schools to teach Mr. Olympus and Hades in science classes or a group of them tried to get a law passed saying only those shot by Cupid could get married, it’s very unlikely they wouldn’t have anything to say about it.

Theists teach their respective doctrines as if they were self evident truths.  I’ve never heard one say. “This is just my opinion, but I       think my god is probably the only true god, and those who disagree are welcome to express     their own opinions.”

Yet, these “truths” don’t stand up to close scrutiny, so the theist would much rather not be subjected to scrutiny. Which makes me wonder why    they come to an atheist website looking for fiat credulity and act dismayed when they find it not.

The whole premise is based on the notion that Christians and Muslims are somehow just casually talking about their beliefs, instead of doing real and often terrible actions that have wide scale negative effects on the world.