We may be on the cusp of a great religious revival, due to the increased acceptance and eventual mainstreaming of psychedelics.
People often interpret their psychedelic experiences in religious terms, and psychedelic use has often created new religions and helped to engender an authentic reconnection to existing religions.
Mainstream religions rarely offer much more than platitudes or a place to socialize for the majority of their adherents, of whom many are part of the religion simply because their parents were, or because the church is the social center of their town.
They don't have an authentic connection to the teachings, many don't even read their sacred scriptures, rely on priests to tell them what to believe, and usually neither they nor their priests ever had a mystical experience.
Then psychedelics come in to the picture, and suddenly they may have a renewed sense of the sacred, religious texts and spaces come alive, and they may even come face to face with what they experience as the genuine heart of their tradition, including meeting, talking to or even being god.
This is not an uncommon occurrence, even for atheists and agnostics.
I don't think the mainstream culture has fully appreciated either how enormously powerful such experiences can be, nor their repercussions.
Historically, mainstream religions have been very against drug use, but it'll be interesting to see what happens when their churches, mosques, and synagogues start filling up with people who were drawn there through mystical experiences they had on psychedelics.