It may be one of the most surefire findings in all of social psychology, repeatedly replicated over almost five decades of study: American conservatives say they are much happier than American liberals. They also report greater meaning and purpose in their lives, and higher overall life satisfaction. These links are so solidly evidenced that, for the most part, modern social scientists simply try to explain them. They've put forth numerous possible explanations. There are a couple clear contributors to point out first. Marriage tends to make people happier, and conservatives are more likely to be married. Religious belief is also...