system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Religion's focus on female sexual purity is not because of "God," but based on male sexual fetish (kink) and likely an evolutionary paternity insecurity

Purity culture is sexualization.

It's not been ordained by a deity above.

It's because straight male humans are horny and have obsessive inclinations toward female sexual access. This is probably because of some evolutionary insecurity regarding paternity, which has materialized as an intense sexual desire of straight men.

Telling women in those cultures it's because of "God's will" is a slap in the face to those women. They truly believe that which is probably why those cultures thrive on keeping women in the dark as much as possible.

They should be more explicit and let them know it's primarily because some man out there wants to have sex with her "first" to 1) increase his psychological pleasure and 2) ease his lizard brain.

I'm open to **root** reasonings that don't lead to the above because I'm struggling to find other rationales. 

**TLDR**: Invoking God for your sexual desires and impulses is distasteful.
gpt
In a time before reliable birth control, it's pretty obvious why sexual abstinence would be more of a concern for women, and this doesn't require any male involvement or "keeping women in the dark" or anything like that.  Raising a child is a significant economic burden, particularly in a culture practicing sustenance agriculture.  If there is a child, the man might be able to escape responsibility by pretending it isn't his or by running away, but the woman definitely cannot.  So the tendency will be for women to think through the consequences more than men.  Religious "purity" is just a cultural artifact that grows up around this basic biological fact.