-they won't admit that the rise in erectile dysfunction among young men is correlated to pornography use?
A. [citation needed]
B. Even if that IS true (and I seriously doubt it) correlation does not equal causation. I mean, I don’t know, is there really a rise in ED among young men, or is it just that more young men are seeking treatment for it these days? (and was that an intentional pun? “rise in ED”?)
-they won't admit that the violent, degrading acts they learn from porn make them terrible lovers to women?
If someone’s only doing things (whether “violent and degrading” or not) because they “learned them from porn” instead of, oh, maybe asking their partner what they like, for example, then they’re probably gonna be a terrible lover anyway.
-they won't admit that the women on the other side of the screen are real
Well, aside from watching videos, I do watch hentai, read erotic fiction, and even play a few “adult games.” The people in those are NOT real.