[quote="dragonkain"]I suppose the sex on the ads would seem fake since its usually on a 3-4 second loop, and no girl is that fast. [/quote]
Well, most of the porn is fake, and the women usually fake their orgasms. But I dont think that makes it gross. I see it this way: in (non-porn) movies when someone gets shot for example the actor ACTS the pain. The fact that he doesnt really feel the pain doesnt matter (and in this example itas actually good D:). Just like women in porn act their orgasms. But the thing is, both are quite horrible to watch if the actor doesnt act it well.
Also, to OP: vaginas in hentai can look quite horrible too. There are blue waffles and other things in hentai too. And there are anatomically derped vaginas in hentai too because some people dont know how to draw them. So at least the real vaginas look like they should.