No, but there is a lot more to it then you would necessarily learn on your own (or as quickly).
For instance, growing up as a teenager, all the references to oral sex implied it was gross, but it was porn that showed that it wasn't. Or that foreplay could be quite varied and an important part of sex etc etc.
In my younger years I learned a lot about how to please a woman from porn.
It was admittedly mostly what you would call "soft porn", but instructional none the less.
As far as hurting people, I'm not sure I agree, a lot of people are REALLY into sex and it seems to serve a market that exists, not the other way round.
Arthur
really into sex? or really into watching other people have sex?
the way i see it, sex should be a discovery process between two people which promotes a deeper intimacy than just the physical.
and the way i see it, if you can't figure out how to fuck without watching a porn video, then you're retarded, and you shouldn't be spreading your dna around anyway.