For a long time, though, it wasn’t clear whether this youthful defection from religion would be temporary or permanent. It seemed possible that as millennials grew older, at least some would return to a more traditional religious life. But there’s mounting evidence that today’s younger generations may be leaving religion for good.
Social science research has long suggested that Americans’ relationship with religion has a tidal quality — people who were raised religious find themselves drifting away as young adults, only to be drawn back in when they find spouses and begin to raise their own families. Some argued that young adults just hadn’t yet been pulled back into the fold of organized religion, especially since they were hitting major milestones like marriage and parenthood later on.