Religion is on the decline in America:

Fewer American adults, especially those under 30, attend church — or even belong to a church.  They tell interviewers their religion is “none.” They ignore faith.

Since 1990, the “nones” have exploded rapidly as a sociological phenomenon — from 10 percent of U.S. adults, to 15 percent, to 20 percent. Now they’ve climbed to 25 percent, according to a 2016 survey by the Public Religion Research Institute.

That makes them the nation’s largest faith category, outstripping Catholics (21 percent) and white evangelicals (16 percent).  They seem on a trajectory to become an outright majority.   America is following the secular path of Europe, Canada, Australia, Japan, New Zealand and other modern places.  The Secular Age is snowballing.

Good work capitalism!  Of course, the "nones" make up an even bigger part of certain elite institutions, such as universities.  I would guess the percentage of "nones" on the law faculty here, for example, is on the order of 75%.