Pew Research Center: Are We Happy Yet?: "Several of them [correlations] stand out: Married people are happier than unmarrieds. People who worship frequently are happier than those who don't. Republicans are happier than Democrats. Rich people are happier than poor people. Whites and Hispanics are happier than blacks. Sunbelt residents are happier than those who live in the rest of the country."
Whew! I didn't know I was so unhappy -- an unmarried, non-church-going, middle class, northeastern Democrat. Well, if this is misery so be it. I'm pretty content.
It's an interesting study, even if it isn't personally relevant.