In addition to social media, the experts agree porn has had an outsized influence on millennials, many of whom came of age just as porn was becoming widely accessible online. This, of course, is a huge shift from previous generations. “In the 20th Century, some guys tended to be sexually compulsive with lots of women,” says Snyder. “These days, they just tend to watch lots of porn.” In other words, they don’t have to seek out sex with another person to have a sexual experience that involves other people, even if those people are only in a video.