It often bothers me in my school when people (not the sort of people I like to associate with) claim to be an atheist or "non-believer" yet they continue to sing the school hymns and say the prayers when asked. Also when some people who say they are atheists then they go a head and blame god for some thing; such as creating a creature in a certain way.
I stopped sings the hymns ages ago. I go to an Anglican school and they are pretty accepting although some of the staff are a little pushy with there beliefs. But the other day during on of the chapel services we have once a week while not singing the guy standing next to me nudged me. I looked at him and said I don't believe he said he doesn't either and i asked him why he sings. He said he didn't know and stopped but about 5 minutes later he was at it again.
Sorry about the long post but I would like to hear other people's opinions.