I asked myself the very same question and my response was as follows... "It's the history I've studied and the Christians I've had the displeasure knowing that made me cringe at any mention of Christianity. They are dogmatic, close-minded, they see in negative light the things I consider to be good (like, say, sex...), they are anti-women's rights, and they have a set of rules I disagree with. Oh yeah, and they have also been known throughout the centuries for using any and all method to convert people. They destroyed pagan worship grounds and built churches on top of the remains. They stole pagan holidays. They have killed those who refused conversion. They have burned witches (amongst other "heretics" - like Jews). Even today, their extremists are killing those who disagree - like abortion doctors..."
Yes, my first response was quite enough for me... I was content. But then I stumbled upon some Christian propaganda on the net. Not that I haven't seen Christian propaganda in the past, but somehow this time something clicked. Like I said, I was raised in the former USSR. Which means I was raised on Communist propaganda. In daycare we colored the pictures of the communist leaders. In kindergarten we learned poems about our wonderful communist government and songs about the heroes of the Revolution. In first grade we all became members of the "Little Oktoberists", in third - "Young Pioneers". By the time we were teenagers, we all understood what a bunch of crock Communism was. We made fun of the Communist posters and Communist slogans that were everywhere. We snickered at the statues and busts of Lenin that graced every corner of our cities. We shrugged our shoulders at the propaganda that came at us from all directions, including our history and social studies classes. Propaganda vocabulary was the butt of many a joke. And when I was reading that Christian bit of crap on the web, I finally saw the words for what they were, part of that vocabulary, and everything finally clicked, and I understood. Although they are true, all those things I said were my reasons for hating Christianity before, they're not the main reasons. The real reason I have such revulsion against Christianity is because it is saturated with propaganda. I don't expect you to understand, but this is very personal - much more personal than the killing of the abortion doctors or the witch burning (even though I am a pro-choice witch). This one I have lived through since childhood, have learned to despise out of self-preservation. And you can tell me all about the virtues of this particular religion or you can ask me to just try to be more tolerant. And I might even agree with you. But truth is truth - propaganda plays an integral part in this religion, and I might never learn to tolerate it.