I disagree with this whole argument. There are plenty of evolutionary reasons for women having multiple partners.

Even just the ability to get help and resources from multiple guys is one. Genetic diversity of offspring is another.

Also, there are plenty of sexual activities that don’t result in pregnancy and I can’t imagine pulling out is a modern thing.

I am openly more slutty than most mwn. But right now I have a boyfriend, and there are many disadvantages to not being able to hook up with other people.