I myself worked for nearly a decade prescibing birth control to teens. I believed that oral contraception was the most powerful weapon I had to help teens avoid life-altering dilemmas that can and do cause irreversible physical and psychological harm. But I realize now that what we've been doing has been akin to rearranging the deck chairs on the Titanic. We now face a gargantuan consequence of that sexual freedom: At the same time that teen pregnancies declined, the STD epidemic shot through the roof.