What I mean is even the "mental arousal" you're talking about is actually closer to being asleep despite seeming like it should be the exact opposite state. It's actually easier for those same men to get erections when they're completely unconscious or close to it than when they're wide awake and with someone who stresses them out, bores them, or disgusts them.
Yeah, hence morning erections. But that's besides the point I'm trying to make. If men at 25 go and need Viagra, I think it suggests that the erectile disfunction is caused by a biological issue, not a mental issue. And I think porn addition would be mainly a mental issue, one that Viagra wouldn't help with.
Still, porn has a lot of negative sides.
On young, inexperienced minds it gives false impressions on what sex looks like, what bodies should look like. The porn industry is a dystopian hellhole full of abuse and coercion. OF is marginally better in terms of there being no abusive producers and production companies necessary, but it's still young, impressionable women being lured into exposing themselves on the Internet for everyone to see, for basically no monetary gain. The promises of making it big on OF are alluring, it's similar to how a surprising amount of female students here do a bit of escort work on the side to finance student life for themselves. But escort work can be much more limited and contained, and there's a higher psychological barrier to starting it. Fewer would do it, and once they stop it's easier to bury their past.
OF has a very low barrier of entry, and the top 0.5% there promise a lot of quick cash, when in reality they probably won't make much at all. And then all that stuff is on the Internet, and will potentially pop up one day.
And that's the *good* side of the porn industry, in the classic porn industry a young impressionable woman might get roped into the whole thing via modelling promises and coerced into full hardcore porn, and either end up with a single or few "new face" porn scenes on the net or a whole career of doing increasingly fucked up things for the next few years ahead of her, all of which will end up on the net forever.
Porn consumption, in moderation and with knowledge of how fake it all is, is imo not necessarily bad in and of itself. It's a visual aid for pressure release. If it becomes an addiction, when it colors and filters the perception of reality, then it's of course bad.
But porn consumption feeds the porn industry, which is nigh universally terrible to everyone involved (except the producers, of course), and that is a problem. Apparently enough people pay for porn to keep it all afloat.
So it's all a big mess. In an ideal world, all porn would be ethically produced with fair shares of the profits to everyone involved, and zero coercion and pressure upon the performers.
But it's not an ideal world, and producers regularly pressure performers into increasingly degrading shit, enabling consequent drug addictions, and influence the type of porn consumed (incest and interracial porn being probably artificially pushed), affecting demand and supply.
OF and similar are somewhat more ethical by nature, but the problem is that young people in general are *retarded*. They just see the top performers and want a piece of that pie, and then they spend money on camera setups and showing off their bodies on camera for hours each day for peanuts, if at all. As the modern day philosopher Janoy Cresva said, "it's sick, it's piss, it's revolting, it's insulting".