Shacking up via free will, no problem.
Shacking up via manipulation, control, coercion, threats, promises of heaven etc.....
Bluntly, it’s because these guys couldn’t get laid otherwise. The mark is on the ultra-control...the greater that is, the greater the possibility that without all the restrictions, barriers, isololation, brainwashing etc... these men would be 50 year old virgins.
Lol, you may be right about not getting laid otherwise. Sometimes watching the religion threads here I think there is a lot of brainwashing in organized religions whatever they may be. Of course, not my religion.