Zid
Another angle on the topic - being a True Believer always begs the question why everyone else cannot see the Truth too? Only so much you can do with an invisible and not so powerful Satan. So nonbelievers cause a bit (or a lot) of strain to True Believers, whereas someone who doesn't have all the answers is also not threatened because there are different opinions out there.
Maybe less strain leads to more happiness?
Retro