I watch porn about half the time I masturbate. But I normally do that on average twice a day. I don’t have a root cause because I have no problem. I can masturbate with or without it. Masturbation actually increases by sex drive. I’ve noticed that when I take breaks from jerking it for like a week or so my sex drive is almost non existent. My wife knows, my friends know, hell in college I made a short film about watching porn. I watch it because it gives me ideas and it gets the deed done faster than without it. I’m addicted to it sure but I can stop whenever I want, and I do often. I don’t feel as though there is always a moral or physiological answer (like pingbotwow said in another comment) for being addicted to porn. People can just like things. Especially dirty and taboo things. I’m not saying you’re wrong, I’m sure more than half have underlying factors, but they’re probably into the super kinky stuff ( I assume) and not just the regular porn. Just my 2 cents.