Andrew Greely says 'America's Disease is Greed'. I would say greed in the absence of the social, like (real) social capital (not the kind we bandy about on social networking sites), is a big part of the reason why the States is so collectively unhappy. When the social breaks down, something must replace the void of ritual, norm, and tradition that's left - unfortunately for us, capitalism is a system of production, not a framework of meaning and belief.