(...) Corn=Porn, most members didn't get the corn part so I am mentioning it as well here so people won't get confused.
This is not YouTube, you won't get demonetised by using forbidden words, so no need to censor yourself.
First and foremost, stop watching porn, you're just frying your dopamine receptors and could end up unable to form a real, healthy relationship. There's literally nothing good about that.
But as for your question, I think the lack of other advertisement spaces plays a big role, but probably there's also a sizeable overlap between gamblers and porn addicts.