Nail on the head. I think about this a lot with churches. My wife has been looking for a church that's more diverse. She found one that had a lot of racial diversity, but most of the members were in the local divinity program and she just didn't click with any of them. Now we're at this farm where everyone has similar ideas on the value of food, but there are widely different backgrounds and beliefs (though most of us are white.) She likes this group more, but feels guilty because in her eyes it's less diverse. In the latter location, we're exposed to a broader range of opinions and experiences, but they feel less diverse (to her) because they're all processed through a similar lens. I'm not saying one's right - but I do believe a community requires some degree of homogeneity to at least start to mix together.