Well i'd say the creationist hype and the demonizing of science play a huge part.. in my opinion, i am not from the USA but that is the picture that i got.. people are brainwashed to abandon any sort of rational thinking when it comes to their imaginary friend.. and the "creation scientists" feed them "more god" although reason and knowledge should wash it away
here we have even less atheists and even less tolerance towards other religions and ESPECIALLY towards atheists like me..
It is funny, in bosnia we had a war 20 years ago between muslims (mainly) and serbian christians, like in the "good" old times.. infanticide, genocide, rape, slavery of some sort, and so on. The war could only be ended by dividing the country.. and now after the war, the religious penis measuring won't let the country recover.. they screwed up the following generations for good and won't even let us work on it.. But when it comes to god, they hate atheists more than each oter... and i have the same feeling when it comes to all the religious haters everywhere on this beautiful but ****ed up planet