Earlier quoted context omitted.
I feel like you didn't answer the main question. What if I recognize the potential value in all of the things you mention, but don't believe in God and don't want to lie to people about it?
You don't have to lie to people. You can go to church and not believe. I know several people that do that. So, I'm assuming that you also have some qualms about how Facebook or Google does business? Does that mean you refuse to use Facebook or Google? By using commercial services, you are actually supporting them financially. You can go to most any church without donating anything at all.
Given a prayer to a god one doesn't believe in feels dishonest for some, as does nodding along and letting people assume you share their beliefs when you don't. The foundation for church is supposed to be a shared theological belief, so it's not too difficult to understand why some might be uncomfortable joining when they know that they don't share the belief and have to go through certain motions to conceal this fact from their brethren.