Experts who study Americans' bedroom habits say there are a number of factors driving the Great American Sex Drought. Age is one of them: The 60 and older demographic climbed from 18 percent of the population in 1996 to 26 percent in 2018, according to the survey. The share reporting no sex has consistently hovered around 50 percent, and because that age group is growing relative to everyone else, it has the net effect of reducing the overall population's likelihood of having sex.