I get the feeling some of these folks were so committed to cheating that they were willing to fork over money on the off chance that it might produce some extra-marital kink. I bet that some of these folks paid for memberships to several sites of this type, as well as trolled craigslist and other places looking for anything they could get. I just can't understand why you would put so much money and effort into cheating, but wouldn't have the balls to tell your spouse you're done.