Society tells us that it's dirty, filthy, and wrong, and women who have it are sinners who have to pretend that they don't know what a male organ looks like.
Then, on that magical day at some point in their adulthood, those formerly dirty women get married (if any guy will still have them and their tattered hymens) and the sex act, a thing they've been doing in a dirty way for years, suddenly transforms into an amazing and blessed experience.
Sex, you see, is a very bad, dirty thing that you should only do with someone you love very, very much.