Also keep in mind that the whole affair thing was a branding change done in 2009 so many who signed up before may not have been looking for that. Then you have stories about people who were looking for a discrete relationship and wasn't commuting adultery they just needed to be discrete because of personal reasons (like living in a country that imprisons or executes people who are gay).

Plus anyone can add someone to the service AND there are plenty of people who enjoy the trill of simply looking and not doing anything.

So yeah I don't think it's a slam dunk that they're all "cheating jerks". Though I'm sure plenty are :)