This is a real story that bothered me for a long time. I once met a SP whose (half-) brother was her booker/driver/manager.
Would you be comfy driving your little sister to an appt being banged by some guy with a huge member, with her pussy feeling sore for the next few days?
I have no problem f*ucking someone else's sister, wife, or mother, but I probably don't want someone else to f*uck my sister, wife or mother. Yeah, it's a double standard.