The shoe is on the ‘other foot’ in my relationship. Sometimes my s.o. joins me to watch a video, sometimes he doesn’t. We have different sexual ‘needs’ you see, he needs sex a lot less frequently than I do, therefore he doesn’t mind if I play. shrugs
And I agree with Laura, the woman on woman stuff can be great! (Especially if there are handcuffs involved) 
As to your post as large, I can definitely feel your frustration and confusion, though I’m not sure if I understand the entire situation.
One potential to this story is that he does have a problem. Does he have a sexual history with any negatives? Inability to relate to women, or inability to feel ‘worthy’ of sex with a real person, self doubts sexually? Does he have trouble with you sexually other than his porn habit?
If so, he needs to want to look into his reasons for overusing porn, otherwise you are forcing him. Change happens best starting within ourselves. Then together you can open dialogue, work through this, maybe see a therapist together.
Another possibility is that this is a problem between his sexuality not meeting your sexual ideals. Basically, you are right to have ideals for YOUR life, but that does not mean anyone else has to fall within that defined ‘right vs wrong’ sphere. Perhaps he feels constrained by the ‘porn is bad’ attitude in the household, and thus hides it? Hiding it of course removes the healthy and natural pleasure porn can bring and replaces it with fixation and feelings of self blame.
But this may not be your situation. What I do think you should do, is to take some time to pamper yourself, to feel good and relieve stress. You are obviously feeling very upset about this. Go for a run to get rid of the nervous energy, take a long bath, sip a glass of wine and just don’t think about the situation for a day. You are a person separate from your relationship after all. 
Then, pick a day in which you are feeling mellow and not stressed by other problems and try to talk to him in a comfortable setting. Try open communication about your feelings without quilting him, without making him feel like a bad person, without any generalizations about men. Maybe if you can figure out ‘why so much porn’, the ‘porn’ won’t be as much of a problem?
Best wishes, and hug