I know for a fact that women after CC are Damaged Goods but why is that? Let's say she had sex with 30 different men, some from LTR, some from STR, some from FWB and ONS.

Technically speaking that means that 30 different sausages were inside of her but how exactly does it make her damaged goods? I know about the study that they're 33% more likely to divorce if they had more than 10 sausages.

They can't pair bond but why? I need to get to the core of it as I'm interested in it from psychological point of view.

If she used condoms then they didn't leave anything to change her biologically so it must be purely psychological.

Any scientific research about the core of that? Or someone studied that in detail and can advise?