It looks obvious

In a paper in the American Sociological Review, Michael Hout and Claude S. Fischer announced the startling fact that the percentage of Americans who said they had “no religious preference” had doubled in less than 10 years, rising from 7 percent to 14 percent of the population. This unexpected spike wasn’t the result of growing atheism, Hout and Fischer argued; rather, more Americans were distancing themselves from organized religion as “a symbolic statement” against the religious right. If the association of religiosity with political conservatism continued to gain strength, the sociologists suggested, “then liberals’ alienation from organized religion [might] become, as it has in many other nations, institutionalized.”

Five years later, that institutionalization seems to be proceeding. It’s showing up in an increasingly secularized younger generation: A recent Pew Research Center survey found that 20 percent of 18-to-25-year-olds reported no religious affiliation, up from just 11 percent in the late 1980s.