why is body count such a big thing nowadays?

I swear it didn’t use to be a thing that was ever spoke about or anybody else’s business. why is everyone always going on about body count? you get really ran through men that say they want a girl with a low body count because “why would i pay for something she gave others for free” signifying they only wanna put effort into a relationship for sex and not emotional connection. maybe it’s from insecurity that they feel they won’t be able to compare to other guys? i feel like “gave away for free” is such a weird way to put it as well considering the woman are aloud to enjoy sex too. i understand virgins wanting other virgins but that’s it