It could also be due to the millennial generation being pickier about who we have sex with. Consider this graph [1] from Datacalysm. It displays the number of m

It could also be due to the millennial generation being pickier about who we have sex with. Consider this graph [1] from Datacalysm. It displays the number of messages received by attractiveness. The more attractive an individual, the more messages they receive. There's also another graph [2] that splits this data by gender. There is a pretty significant drop around the 85% mark for women. Which means that the bottom 80% of men are competing for the top 10% of women when meeting through online dating apps. In a world where a more attractive individual is only a swipe away, it's much more likely that the less attractive individuals are getting far less sex. This is just attractiveness. Consider other elements, like family pressures, possibilities of lawsuits / accusations (#MeToo), and other modern issues around sex. No wonder folks are spending less time hooking up. [1]: https://i1.wp.com/www.brainpickings.org/wp-content/uploads/2014/10/dataclysm3.jpg https://i1.wp.com/www.brainpickings.org/wp-content/uploads/2... [2]: https://i.redd.it/09d1ndzeki221.jpg https://i.redd.it/09d1ndzeki221.jpg