@Shaokang I picked religion as a subject in elementary school, for 8 years I had one class a weak, studying the bible, most of them in the church, since we were minority  and there was so few of us to make a functional schedule for us. In Gymnasium I picked citizen’s education for the same reason you picked religion, except you didn’t have to even attend it, I was on maybe 8 classes total. I agree with you in global sense about function of organized religion, but as we become more secularized as societies it goes back to it’s original functions, hope, denying death and excuse for mistakes. I was mostly taught about hope, goodness and love, I don’t think I was once threatened with hell or something similar religious people do. I’m not a believer now, those classes definitely had influenced me, but mostly not in a bad way.