Putting aside your sarcasm, I'll comment that my observation was based on my experience. In college, I began to wonder if I was simply born into the right religion or not. A girl I was dating got me interested in born-again Christianity. I found that there was a lot of biblcal knowledge and some people were genuinely saved from a life of drugs, alcohol and promiscuity. It was beautiful. However, there was a large fraction of people who could do nothing but speak their hate for the Catholic church. And they would refuse to hear about the numerous similarities between their beliefs and the beliefs of Catholics. "Jesus healed the sick" was met with "Well that doesn't mean that good works will get you to heaven", etc.
Did she dump you because you refused to join her church?