This will only happen with thinking people.... which unfortunately is less than half of those in the U.S.

where there is an opportunity there is an opportunist.

There will always be some form of religion and faith-based cults. As long as there are people who have been psychologically and emotionally hurt there will be organizations to take advantage of their needs. We know that child abuse (of all kinds) is not exclusive to the poor it spans all levels of economics and status.

Organized religions have evolved over the millennia and adjusted their policies as trends change and will continue to do so.

Education is the answer, teach children critical thinking to question everything as well as exposing them to science in an interactive way. That will go a long way in making changes for the better.

I deeply hope that you are right.
You are correct in pointing out that those "true believers" who have committed their entire being to their religious ideology will be shattered. The disillusionment will leave them with virtually nothing in terms of defining who they are. It will be frightening to be so empty, so alone.

But, that is the existentialist dilemma: If we are to be free to define ourselves, we must face the fact that each of us is essentially alone in the universe; that no one totally understands us for who and what we are. Once we do that, we are free to form out own patterns of meaning, our own definition of self, our own values and beliefs, our own linkages with others. It will be hard for the disillusioned, bu "coming out the other side." will be exhilarating!