If you are not going to give Christianity credit for hospitals and schools then you cant blame Christianity for the crusades. You need to be consistent.Christianity didn't start those schools. People did. If I made a school or hospital in the Name of a Noodle monster, that does't validate my beliefs. Christianity has also done a large amount of bad. Remember that thing called the crusades?
I congratulate you on your recent awakening, but I think given time you will come to the conclusion that you can be an Atheist and reject Christianity without needing to demonize Christianity. I believe Christianity has inspired people to do good, and to do evil.