Unfortunately mick, stupid, childish posts like yours only fuel the flames for the 'all porn users are as bad as rapists' brigade!! Ffs, can't you make a point about your porn/masturbation habits without resorting to crude language and insults?
Fwiw, essentially I understand the gist of what you are saying, but you couldn't have worded it any worse!!!
I am a female, and I know my dh uses porn occasionally, which I don't mind about in the slightest. He doesn't tell me when he does, but the odd time I've noticed history etc. We have also used it together, and shock horror, I have been known to look at it on my own. I resent the insinuation that I am either actually a man masquerading as a women, or a 'failure' to the female population! I don't consider myself 'hip' or 'cool' either, and don't strive to appear so.
I am just a normal woman, with a happy marriage and a healthy sex life (when not sick and pregnant). I don't deny that there are certain parts of the porn industry which are exploitative to women, but disagree strongly that it is all like this. I have two friends, and an ex who were in the industry themselves and they would laugh if anyone were to refer to them as exploited.
OP, I can understand your shock, but in answer to your question, it's not unusual for men, and women of all ages to look at porn occasionally, and very few are addicted or need counselling. Unless you have already made it clear to your dh that you find porn use unacceptable or feel he has outright lied to you about his use of it, then IMHO, I think it would be very unfair on him to throw him out or ask him to seek counselling. Maybe now is the time to discuss your feelings and boundaries wrt porn use, but also as an adult, you cannot forbid him to do something which he does in private (although he may well out of consideration to you decide not to do it any longer). He shouldn't be made to feel dirty or ashamed though, just as he shouldn't make you feel that way for eg. using a vibrator in private or reading erotic literature.
I hope you two can work this out, and am glad you say you are feeling a lot calmer now. Take care.