“Girls “going wild” aren’t damaging a generation of women, the myth of sexual purity is."

Source― Jessica Valenti, The Purity Myth: How America's Obsession with Virginity is Hurting Young Women

More from the book:

The lie of virginity—the idea that such a thing even exists—is ensuring that young women’s perception of themselves is inextricable from their bodies, and that their ability to be moral actors is absolutely dependent on their sexuality. It’s time to teach our daughters that their ability to be good people depends on their being good people , not on whether or not they’re sexually active…so while young women are subject to overt sexual messages everyday, they’re simultaneously being taught—by the people who are supposed to care for their personal and moral development, no less—that their only real worth is their virginity and ability to remain “pure”.” 

Why do we base a woman's worth on an antiquated idea of sexual virtue?