Imo, porn is just a side effect of the disgusting human condition. Ofc, saying this as someone who once spent over 10 hours a day going through the stuff, so I'm partly reacting out of disgust at my old addictions, but I've never heard about porn changing anyone's life for the better.
Porn is a rabbit hole of sexual exploitation, milking everyone involved of time, money, and dignity. It's so disingenuous. I've never seen it bring anything but unhappiness, broken families, bankruptcy, shame, and debasement, and I'm not exaggerating about the bankruptcy bit. My neighbor, who passed last year, rest his soul, actually went thousands of dollars into debt chasing porn, poon, and internet prostitutes. Lost a mint condition candy red convertible chick magnet in the mix, hundreds of thousands of dollars, and nearly lost his house between porn and gambling. And he also hit on me and my ex-girlfriend when she was 15, which was really creepy, but that's beside the point.
Porn isn't harmless. It subverts and perverts the natural expectations about sex, and once you get used to the vanilla, you have to go to more and more debauched, debased, disgusting niches to keep things exciting. It can even make it difficult to have a healthy, happy sex life with your partner. I used to masturbate to guro and snuff films, among other things, and because of that I couldn't become aroused with a partner and had to be in control to have any fun. I was either bored or anxious half the time, and without fire and fury so to speak, no fireworks.
There are people out there who would pay to see rape, murder, mutilation in the name of porn, or failing that, go out and make their own torture porn, like that guy who filmed himself cutting off another (willing) man's penis to eat.
Before long, watching porn turns to obsessive thoughts, over eroticizing things in your daily life, developing more and more insidious fetishes, masturbating compulsively, until masturbating to the porn becomes a chore and you're a slave to the urge. Eventually, it alters your thought processes and behaviors, starts ruining your personal relationships, and may even lead you to dehumanizing views of people around you, at which point you might try to act out whatever crazy fantasies you have, which is dangerous. Porn makes people dysfunctional.
Having said all that, I'm glad I left it at the foot of the cross. I'm 100 times happier. Even though it took a lot of prayer to break the habit, and some days it nags me more than others, I smile more, I'm not in a bad mood because I can't masturbate at certain times, I'm not keeping secrets from people or lying about what I'm doing for so long shut up wherever, and I get a lot more done. Not to mention, I no longer have the vicious circle of obsessive thoughts, negative body image, compulsive masturbation, and shame that goes along with it. I feel free to live my life.