http://talkabout.makelovenotporn.tv/2013/04/01/what-is-realw...
Porn in the abstract is absolutely, as you say, a valuable tool for exploring our sexuality, finding out what turns us on, learning there are other people with the same tastes out there. The issue isn't porn, but the absence of an open healthy dialogue around sex in the real world, which is what lies at the heart of the business problems this comment stream highlights, which in turn force the porn industry down worse and worse routes: when you force anything into the shadows and underground, you make it a lot easier for bad things to happen, and you make it a lot more difficult for good things to happen.
That same lack of open healthy discussion around sex is why these social problems exist - the ones that MakeLoveNotPorn is out to tackle:
http://www.ippr.org/assets/media/publications/attachments/yo...