I think it was AtheistPreacher who posted a TED talk about porn. It was really interesting.
The point of the TED talk was that internet porn today provides the opportunity to view many different women in pornographic situations and it demonstrated that stimulation increases with that variety. Not to mention that the majority of women in porn have above average physical attractiveness. But as a person gets accustomed to viewing multiple unique women in a short period of time they begin to rely on that to achieve the required amount of stimulation to become satisfied. So, for our young boys, who have access to internet porn before the generally have access to female sex partner, they can develop this skewed sense of sexual stimulation before their first encounter with a female. Then, when they are with an actual female they are not being adequately stimulated and therefore have a rather disappointing encounter, one that can often be embarrassing and emasculating because they do not perform well and may not be able to maintain an erection. This further engrains this fantasy vs reality dysfunction into their sexual psychology. It can be a real problem. You can call it porn addiction or not, but if a person requires multiple images of different women in order to become stimulated and that same person has negative experiences with real life sex then their sexual desires are going to be focused around that which provides them sexual satisfaction.
