That's a myth . And that's all I have to say about that.
It's just the way there minds work.
It is important for women not the number of sexual relations, but their quality. But I agree that men love casual sex more than women. Many men are clients of fast women. After sex for money, men feel more sexually satisfied. But there is an exception to the rule. Many women become sex workers, not only because of money. They like the process of sex itself when different men get the hand of a woman and enter into. You can find many women who really like to have sex by following this link