Porn addictions described on NoFap show that porn can cause men to have erectile dysfunction (due to "death grip" and desensitization), failure of arousal for real women, extreme shame, and even suicidal thoughts.
Reading through that forum, you'll see thousands of people who have tried to quit porn over and over, but continue to relapse. I suspect NoFap is likely a microcosm of the broader society; porn addiction is real, and it's likely widespread.
It’s not the porn that’s the problem, but sexual repression, feeling ashamed of something that’s completely natural, etc.
I've mentioned elsewhere that Chris Rock and Terry Crews have come out about their experiences with this issue. This lends the issue some legitimacy I think.
It's always interesting how celebrities, who's lives we know relatively more about than internet strangers, can help contextualize and legitimize the sincerity of these sorts of problems.
There's plenty to read about how dating has changed, but it will be hard to control for the other generational changes to relationships. Most significantly, the changes introduced when parents and institutional stand-ins for parents found more important things to do with their time than parenting.
https://www.telegraph.co.uk/education/2017/09/11/end-young-l...