Porn study couldn’t find a man who hasn’t viewed porn
http://www.gmanetwork.com/news/story/252909/scitech/science/porn-study-couldn-t-find-a-man-who-hasn-t-viewed-porn
What is seen, can’t be unseen.
They probably advertised for the study in porn magazines
I think there are probably a fair number of men who don't view porn. But the peer-pressure to enjoy porn is very real, and some men are probably ashamed to say they don't view it.
It's also difficult to explain to a lot of people WHY porn is bad. In the past people have offered porn -- sent links or whatever -- and it's easier to simply say "not interested, thanks" than to explain the evil of it. On one occasion I outlined biblical condemnations of pornography, and the guy I was talking to (a self-proclaimed "Christian") thought I was trying to be funny. When he finally realized I that wasn't, he said "Jesus knows I'm only human, He has forgiven me for watching porn."
When I was 13, in 1950, there wasn't any porn to see. Or even read about. There was nothing with a four-letter word in it printed, on the radfio, or the TV (if you had one). Spoken out of decent hearing, like in the Army or behind the barn, yeah, maybe. But not on the street. FWIW.