Conservative estimates suggest anywhere from 20 to 60 percent or more of people cheat on their spouses. Internet porn remains — as you probably know, quite possibly firsthand— wildly popular. If a thing exists, there’s someone out there who’s into it sexually, and a site dedicated to it somewhere online. And regardless of what you thought of 50 Shades of Grey, either the terribly written novel or the comically bad film, that whole enterprise launched millions of housewife masturbation sessions and helped expand the conversation around BDSM.