After reading this, I think that the reason that nonbelievers are known for being more disagreeable is that people who are more disagreeable are more likely to stop believing.
That is to say, everyone has doubts, but the more agreeable a person is the more they weight other people’s opinions and feelings in their consideration, thus making them less likely to, all other things being equal, stop believing.
Or, it’s easier to stop believing when you actually do care more about the truth than continuing to be in your religious community.
This isn’t to say that there aren’t really nice nonbelievers, but the selection effect is probably noticeable.
After reading this, I think that the reason that nonbelievers are known for being more disagreeable is that people who are more disagreeable are more likely to stop believing.
That is to say, everyone has doubts, but the more agreeable a person is the more they weight other people’s opinions and feelings in their consideration, thus making them less likely to, all other things being equal, stop believing.
Or, it’s easier to stop believing when you actually do care more about the truth than continuing to be in your religious community.
This isn’t to say that there aren’t really nice nonbelievers, but the selection effect is probably noticeable.