[mikedouglas]

If your hypothesis was correct, shouldn't these lily-white small towns in Pennsylvania and West Virginia be paragons of social connectedness and happiness, instead of the epicenter of the opioid epidemic?

The problem with jumping to the conclusion that "multiculturalism is bad" is that it seeds the idea that people who don't lookalike can't peacefully co-exist. Personally, I feel a far greater sense of community here in Silicon Valley than I did in the homogenous suburb I grew up in.