Because they base their entire personality around it and don’t want to challenge their own world views

17

yeah it's like an enormous pillar of people's perceptions of the world. Also it's pretty common to think that without a belief in God, someone can't have any system of morality.

9

when you say that god isn’t real they interpret it as you trying to “debunk” their religion or that you’re trying to provoke them, other times it’s that they feel the need to defend god’s honor. the people who get mad about others not believing in their god (or at least a god) have often been made to associate religion with morality and believing that those who don’t subscribe to (their) religion must be backhanded and/or evil.

6

Insecurity

5