Your thinking is completely rational, and that is the problem, ha-ha....most of the world is irrational. Its like I always say, if you put one sane person in a room with a thousand crazy people, the sane person become crazy and others are the norm. I have noticed the same things that you describe, and lets not forget valentines day...also originally pagan. As Christians, we celebrate Jesus every Sunday. I do not celebrate Christmas and Jesus' birthday, i enjoy the holiday as basically any other Sunday, but on steroids. My advice would be to consider things like Christmas and Halloween as just fun activities, forget that they use to have "evil roots." Lots of things have hints of immorality, but that does not make them inherently evil. Like you said, you had some crazy pastors in your day, but that does not make the church inherently evil.