From my perspective, not everyone have a porn star look or body girl friend. When they are 'having sex' with these pretty young ladies online, whom have a face of an angel and body of a devil, they will have a very different experience. While they are watching porn, they only need to satisfy their own pleasure. What they need to do is just masturbate themselves. In real sex, you may not have a girl friend that is very interest with sex and you may need to stimulate her, doing foreplay to turn her on.
Study shows that guys are mostly attracted by the look of girls. Are they able to erect while having sex if they don't have a partner that looks like a model? Guys, know what these porn can do to you then you may learn that these porn maybe the reason you suffer erectile dysfunction. Cut down the porn and spend some time with your girl friend or go to workout.