Humans always need something to believe in, if a religious figure disappears from their life they will replace it with pursuit of material things and carnal desires. A medieval village fool laughed at by other peasants still had hope because he believed he'll go to heaven, nowadays your average incel has nothing to believe in aside from blackpill charts so there's no hope in his life. Meanwhile normalfags will live hedonistic immoral lives because they don't believe they'll be punished.
There are people who can be moral and selfless without a need for reward/lack of punishment (like me) but they are very few and everyone else needs god