......younger generations are having less sex than their predecessors did. The causes? A decline in steady partnering, especially in marriage, and a decline in sexual frequency within couples. Twenge’s findings largely hold true today. Between 2014 and 2024, the share of young adults, ages 18–29, who reported living with a partner, both married and unmarried, fell 10 percentage points, from 42% to 32%, according to the GSS. Because partnered adults have the most consistent sex, and more young men and women are flying solo....

When it comes to sexlessness (“no sex in the last year”) among young adults, the biggest change comes post-2010. Prior and up to 2010, the share of young adults, ages 18-29, who reported not having sex held steady around 15 percent. But from 2010 to 2024, the share doubled, from 12% to 24% in the GSS.

A 2023 IFS study found that married adults reported lower sexual frequency when their spouse substituted couple time for phone or computer use. Furthermore, bedtime procrastination is a rising habit. So-called bedtime procrastinators spend two hours using some form of digital media in the three hours leading up to sleep. Source