A lot of guys I know say they actually prefer the hand job thing over actual sex. I’m thinking this is largely what older guys want as in general they are just too drunk or lazy to ride their girls properly. I’m aware that the girls like it as it makes their guys happy but doesn’t involve their vaginas or get their hair messed up too much. Ans also there is the time factor, as I suppose your average working girl can do a lot more with her hands in an evening than on her back.