One possible explanation is that, as you say, "most people" are monogamous -- the rest are a group of men who have more partners drawn from the same group of wo

One possible explanation is that, as you say, "most people" are monogamous -- the rest are a group of men who have more partners drawn from the same group of women (excluding the monogamous women), and a group of men who are not having partners at all. See this article [0] discussing a study, and specifically this quote in it which I think reconciles both your point and the GP's: > Most women and men reported at least weekly sex, and most people reported having one sexual partner in the prior year. In the most recent surveys, men age 18 to 44 were more likely to have had no partners in the past year (16 percent) compared to women (12 percent). Men also were more likely to have had three or more partners in the past year (15 percent) compared to women (7 percent). [0]: https://news.iu.edu/stories/2020/06/iub/releases/15-sexual-inactivity-young-men-united-states-no-sex-debby-herbenick.html https://news.iu.edu/stories/2020/06/iub/releases/15-sexual-i...