Societys absolutely do need a belief system that can be adopted by the average man and woman. As we have discovered to our detriment, you can't simply dispense with organized religion, because people will replace it with some other bizarre ideology. Hence all the 'skeptical' atheists who became rabid SJWs.

I think Christianity should be brought back to a limited extent. It can help re-establish (and enforce!) healthy societal norms, and serve as a psychological release valve for society. The Churchs should bring back Old Testament scripture, and be used as indoctrination centers for the youth. They can raise a new generation of traditional women and men.

They can also raise bands of Christian zealots, who can be used as shock troops to purge the degenerates. Of course, you would have to keep a tight leash on the Churchs, because this could all get out of hand and lead us right back into the Biblical extremism of the Middle Ages. I would not want society to revert to that mode of existence.