Some women just have a deep-seated craving to be paid for doing stuff like this. It's a fantasy some of them get into. They don't really want to be whores, get diseases, get beaten up, get addicted to drugs and die lonely while teeming with AIDS, they just want to feel 'cheap and dirty' or 'desirable' in some curious complex that exists in the Boschian landscape of the masterpiece known as the human mind. Illustrative examples using two *smoking hot* ex's.
Ex 1 was a professional dancer (of the non pole variety but that would have, and has been perfectly fine by me) that was vehemently opposed to anal. I stuck a finger up there once while licking her pussy and she came so fast and so hard she couldn't speak to me for almost a day afterwards. Which got me thinking.... Next time she was drunk and horny she got going with her usual cravings of all the stuff that is 'normally' repressed: asking me to slap her on the ass, 'treat me like a slut', and (you'll love this) *desperate* for a cheeseburger. Dancers just aren't allowed to have them. Before I know it, she starts off with the "i'll do *anything* for a cheeseburger... anything.. please...." Pretty soon I said the magic words and it was "please give me the cheeseburger, I'll let you cum in my ass"
Predictably, she came explosively within about 15 seconds of entry. I wasn't far behind.
Basically she wanted to be coerced into having the anal. It was the corruption of it all that made it hot.
Ex 2. Same drill, liked to be given difficult choices that she 'had' to yield to. As in "i'll let you fuck me in the ass if you get me a work permit." This from an incredibly educated, professional, cool, articulate, solid 10/10. Of course I bargained it out to a number of climaxes in her ass, which she loved.
Same deal.
All that said, I still think it's silly, but in the end it's amazing what they'll do for money.
:-D