TL;DR especially in large metro areas, there are lots of other groups doing fun stuff, so I don't think (church - theism) is necessary (but it is an interesting

TL;DR especially in large metro areas, there are lots of other groups doing fun stuff, so I don't think (church - theism) is necessary (but it is an interesting idea). Churches aren't the only way to meet people. Festivals are great if you're in California; there's basically at least one a month if you're looking. If that's not your scene, there are tons of various meet-ups around. Not quite the same as religion, but some are really organized and dedicated. Group exercise was my thing for a few years; cycling groups are great because you get to spend lots of time outside getting in [better] shape, and the people are generally friendly / interesting in my experience. Sailing is really fun too if you find the right club. "Yacht club" might not immediately sound like something you want to be involved in, but Cal Sailing Club at Berkeley marina, for example, is different. It's a co-op ($100 per quarter for membership, they have their own boats) with a really friendly and community-oriented atmosphere.