The fact that ‘you’ claim porn doesn’t harm women is proof that it does. Because such a claim indicates that you are so accustomed to seeing women sexually subordinated you think there’s nothing wrong with it. Such a claim proves that that porn has skewed your perceptions so much you actually believe the women are enjoying, asking for, whatever it is you see. (They’re pretending, asshole. They’re acting. According to some guy’s fantasy script. And they’re doing so because they’re getting paid.)
Such a claim also proves you haven’t read the research: for example, compared to those who did not watch porn, men who watched porn were more likely to have aggressive and hostile sexual fantasies, more likely to say that women enjoy forced sex, less likely to be bothered by rape and slashing, and more likely to consider women subordinate and submissive.
To those who deny this: if you can imagine the women in the porn you watch replaced with men and not be bothered by it, then okay, I’ll retract. And if you really don’t know what I’m talking about, do a search for “erotica” (heterosexual) made by women instead of “porn” and watch the difference.