While I'm open to suggestion about the flaws in my "beliefs", I'm not willing to hear someone blast me for not believing what they do. It annoys me when people call their religion the "truth", and disregard any other religion or belief system.
I'm athiest, or whatever, but I don't go around saying you're stupid if you're a Christian/ Muslim/ Hindu/ Whatever. I may think that privately, but I'm not going to try and force my views on you, unless you ask.
Almost all religions have the problem of fanatics who follow their religion blindly, without question. And these fanatics are very dangerous people, as we have seen with the terrorists of Islam, and the idiots of Christianity, like Jerry Falwel.

B"I'm right, and you disagree. Ergo, you're wrong"o