"Pornography might not look similair to actual sex with a partner. This can cause other expectations during sex with your partner, what eventually leads to more problems (especially in regards to your relationship with your partner)."

I have done a TON of thinking on this subject, having been a cam girl (I hope not anymore) and also having dated people affected by it. I think it is worse now because of the internet 100fold. Too much available all the time is just not good for especially a developing mind. Uff, poor youngsters.