I notice a lot of atheists and even agnostics view religion for all the bad in it. Well is it surprising there's bad in it? Religion is a human institution. Of course there's bad people in it, of course people do bad things because of it. But why do you think people do so much GOOD in the name of religion as well? Why is it that so many people who, for whatever reason, go through a very difficult time in their lives, and then are brought out of it by focusing on a religion? There's got to be SOMETHING there that religion provides that atheism/agnosticism can't/doesn't, why else would it be so popular? Because epeople are afraid of punishment? Personally I think that is a very cynical view of religion. Why think the glass is half empty?
Also, I often wonder, why point out the crusades, the inquisition, when one could just as easily point out communism, which is an atheist ideology (yes I know it is primarily political, but it is practically a religion, given the zeal so many people feel/have felt for it).
Now I don't know very much about any of these things, so I'll just let the more well read individuals of this website enlighten me.