> Teenagers are also having less sex, especially of the procreative kind. In 1991, 54% of American teenagers in grades nine to 12 (ages 14-18) reported that they were sexually experienced, and 19% claimed to have had sex with at least four partners. In 2015 those proportions were 41% and 12%. America’s teenage birth rate crashed by two-thirds during the same period.
Is this:
> As with alcohol, the abstention from sex seems to be carrying through into early adulthood. Jean Twenge, a psychologist at San Diego State University in California, has shown that the proportion of Americans aged 20-24 who report having no sexual partner since the age of 18 rose from 6.3% for the cohort born in the late 1960s to 15.2% for those born in the early 1990s. Japan is a more extreme case. In 2015, 47% of unmarried 20- to 24-year-old Japanese men said they had never had sex with a woman, up from 34% in 2002.
I'm not convinced that is a good thing.