Sexual and romantic relationships between nubile people collapse. From 1991 to 2017, the number of high school students who had sex decreased from 54% to 40% (-26%). At the age of 20, the percentage of abstinent people has more than doubled, from 6% to 15%. From 1999 to 2014, the average number of intercourse per adult and per year decreased from 62 to 54 (-13%). About 60% of adults under 35 live without a spouse or partner.
These figures come from the United States, but the trend is the same in other countries. From 2001 to 2012, in Great Britain, the number of sexual relations per adult per year decreased from 72 to 60 (-17%) in the age group of 16 to 44 years. In Australia, the same rate went from 94 to 73 (-22%). In 2005, one third of Japanese people under 18 to 34 years old and living alone were virgins. In 2017, the rate had further increased to 43%.
In 1995, a large US longitudinal study showed that 66% of young men and 74% of 17-year-old women had experienced a “special romantic relationship” in the last 18 months. In 2014 when the Pew Research Center asked 17-year-olds if they “ever dated, hooked up with or otherwise had a romantic relationship with another person” —seemingly a broader category than the earlier one— only 46 percent said yes (-34%).
The cause is not established. However, we can be observed that the recession of romantic and sexual relationships is associated with the development of nationalist hatred, and the development of "legal" drug abuse, in particular the consumption of antidepressants that make people impotent, frigid and violent (the majority of mass killings and suicides are done by people under the influence of fully legal psychiatric narcotics).