These should be boom times for sex. The share of Americans who say sex between unmarried adults is "not wrong at all" is at an all-time high. New cases of HIV are at an all-time low. Most women can – at last – get birth control for free, and the morning-after pill without a prescription.
If hookups are your thing, Grindr and Tinder offer the prospect of casual sex within the hour. The phrase, "If something exists, there is porn of it," used to be a clever internet meme; now it's a truism. BDSM plays at the local multiplex – but why bother going? Sex is portrayed, often graphically and sometimes gorgeously, on prime-time cable. Sexting is, statistically speaking, normal.
