Lots of guys, 20s or so, can't get it up anymore with a real girl, and they all relate having a serious porn/masturbation habit. Guys will never openly discuss this with friends or co-workers, for fear of getting laughed out of town. But when someone tells their story on a health forum, and there are 50-100 replies from other guys who struggle with the same thing. This is for real.
I'm frustrated by the fact this is being dismissed as a non-issue by a lot of people. Just like anxiety or depression were shrugged off for decades too. This is a real issue if people are saying it's a real issue - there's no place for judgments, there are women out there going unsatisfied and frustrated, frightened men who are unable to step into their sexy roles because porn is a problem for them.
I grew up with porn and it certainly warped my perception of women around me. When I stop using it, suddenly women around me seem more beautiful because I'm not constantly being exposed to the most beautiful women on earth on a daily basis. It's like eating the most delicious substance every single day that has the unfortunate side-effect of giving you no nutrients. You may realize that you need to eat something with nutrients, but everything looks like oatmeal (with no sugar added).