I'm attempting to read Christopher Hitchens' book God is Not Great, and finding it slow going. Sometimes he is excellent--I don't entirely agree with his position on waterboarding but you couldn't ask for a better article on it than the one he wrote--but sometimes you get the feeling that he lost his train of thought and just kept writing anyway. Sometimes it seems as if he'd be content to say "I'm an atheist, that guy's a Christian, this one is a Jew, the other one is a Buddhist, let's all leave each other alone"; but then a few paragraphs later, he's saying "Religion poisons everything."
Granted, a lot of things have been done, and are being done, in the name of Christianity which no actual believer would ever countenance; there are plenty of Jews who don't follow their religion; I don't imagine anyone thinks Mohammed would approve of Sunni fighting Shia, and so forth. Some atheists argue that because evil has been done in the name of religion, therefore religious faith should be abolished (I'm not sure whether Hitchens is taking that position or not). However, evil has also been done in the name of atheism--arguably more, by the USSR and Red China, than by any religion--so we'd need to abolish that too and then what would we have?
Nonetheless, saying "I had a bad experience at the hands of some Christians" is like saying "I had horrible parents when I was growing up" or "I was in an awful marriage" or "My government really abused me" or "I was miserable in high school." Okay, all those things do happen, and shouldn't. But it does not follow that therefore children should be raised in creches instead of by their parents, that no one should be married, that all governments are evil and anarchy is the only acceptable option, or that no one should get an education. Whether your faith is true or not is a separate question, but I just don't see that a faith is rendered invalid because some of the people who profess to believe it don't live up to it.