Long standing religious culture of which Christianity became one of the most dominant as it was forced on the world by way of empires and colonization. In America, Christianity was most of it.
Women are not only expressing empowerment only through sexuality, they are simply saying it is they, not men or society who should have a say in their sexuality.
Most of the talk about body count and such is done by conservative men and women or religious men and women. Since there is no way to verify virginity or body count why worry about it?
Body count and how many times you have sex literally means nothing. It is natural and healthy. It is mostly weak men or misogynist who are hung on this .
Please show your proof the line of work leads to mental health issues?