I don't go out of any desire/fear of reward/punishment. I just enjoy going, to hear something and have a communal ritual. I know many like that.
Little Toe, I think this is a very good point.
I have a friend who likes to go to church because of the sense of community, but he is adamantly atheistic. He believes (and has said as much many times) that when he dies that is it. So he goes, not for reward in the future, but the reward he gets now, good friends. He tells me constantly I need to go to church to experience what true love is - not the fake love bombing and/or cold shoulders you get with JW's.