I can't speak for these porn stars or other people with ED, I'm sure most of it is purely physical that has to be helped with medication etc., but some of these dudes jerk off A LOT... like A LOT A LOT. And for them, the cure is about as easy as a cure can get: stop jerking off so much lol. The guys that "can't get aroused by their wife" anymore or w/e, again assuming it isn't a physical ED issue, if they'd stop jerking off and watching porn for a bit, take a break from it, they'll realize very soon just how bad they wanna fuck their wife again. I mean, unless maybe she's really ugly and out of shape, I don't know.. in that case, that's kind of her problem, innit? But then again, men, especially married ones, are in the same boat... aren't even trying to be fuckable to the opposite sex.