Shame-laden terms like perversion have given way to cheerful-sounding ones like kink. In time, maybe, we will rethink some things: The abysmal state of sex education, which was once a joke but is now, in the age of porn, a disgrace. Over the same period, the number of children the average American woman is expected to have fell from 2. Dating apps have been a helpful crutch. Like economic recessions, the sex recession will probably play out in ways that are uneven and unfair. She assigns students to ask someone else out on a date, for example, something many have never done. The retreat from sex is not an exclusively American phenomenon. The remainder were in long-term relationships. Even people in relationships told me that their digital life seemed to be vying with their sex life.