I've definitely been there. I think it's like what English teachers say when they see their students reading whatever latest YA drivel has been published (e.g. Twilight):
At least they want to read something.
Encourage their passions, even if you really hate what they're currently doing with it, and trust that eventually they'll get a better sense of taste when they learn more about what else is out there.
Take the "lead a horse to water" idiom but add the corollary that the horse definitely will not drink if no one leads it to water in the first place.
I feel like there's still some public, high budget fetish porn being made. Like A Folded Ocean (potentially NSFL, kinky body horror).