The intersection of sex and religion can get very disturbing. But if you want really disturbing, forget Catholicism — that’s just old school abuse of power and guilt and ugliness, given strength by sheer numbers. The really freaky stuff is in cults, like The Family International. Don’t click on that link unless you want to get sucked into a vortex of insanity — it’s about a sex cult that used what they called “Flirty Fishing”, more commonly known as prostitution, to recruit followers to Jesus and to make money, among other things.
I got that from a link to a blog by a phone sex worker, which can also draw you in. Now that I’ve ruined all your productivity for the day, I’m going to put the internet aside and go get some work done.