ludwig - I go because my wife likes me to go with her. I enjoy the camaraderie of the church community, and since I have no problem, and they have no problem, there is no problem.
i can understand someone of faith attending a ceremony which conflicts with that faith, but when you do not have a faith, there is no conflict - it's really as simple as that.
I certainly don;t stand and sit there thinking 'I don't believe in all of this' - it doesn't really cross my mind. The great thing about an absence of faith is that it is nothing like as hard to maintain as a faith - given the constant and relentless excamples everywhere every day that if there was a God, he abandoned us a long time ago.