For me, making me go to church is crossing the line. I don't care if they want to say grace, or kneel at their bedside, just don't make me a part of it unless I [i]want[/i] to be a part of it. Not believing in evolution is also a dealbreaker. Kids are different story. Atheism, or agnostic at the very least. If they [i]choose[/i] religion and are happy that way, so be it.