They're terrifying.
My entire childhood was spent in churches... Catholic, Baptist, and Assembly of God... and their schools.
They all had one thing in common, they were bat-shit crazy. I was horrified every day, adulthood and leaving them behind was a magnificent relief.
This is a huge part of why America is such a shithole, in my opinion.
... and of course they don't pay taxes in the USA, with far greater tax relief than any secular non-profits... so we all get to pay for their ridiculous drek, whether Judaism, Christianity, Islam, Mormons, even Church of Scientology, the taxpayers carry them all.