Why do women (at all) believe in any of the Abrahamic religions? That is a great mystery if you ask me.
The best way to imprison someone is to make them think it is for their own good.
Also, religions (especially misogynistic ones) are quite good at lowering people's self esteem and making them feel worthless. But they are always reminded of how great religion is and how much they need it. Turns into a vicious cycle, like being with an abusive, manipulative partner.
That's the only explanation I can think of. It baffles me too.