No indeed. You are not good Christians. But to deny that European culture descends from Christian ideals is to deny reality. I see you proudly preserve your catherals, and Christian art. It suggests pride in your past. The muslims you take in have no pride in your past, at all. They want to replace you.
Very few would deny that Europe has a vast Christian cultural heritage. However, at one point you realize that there is no reason to believe other than "some people told you so". And then you stop.