Oooo these are all awesome points. There are so many variables of who is really behind the computer screen, and what their intentions were when they searched. To add, I've met many people whose porn preference really didn't reflect what they actually liked to physically do (within and outside of BDSM). Just as some submissives prefer to watch scenes featuring extreme and intense types of play, but realize they prefer a lighter session when playing themselves. Porn is great at making many things appealing in concept even if you'd never do it in practice!