I find that my own enjoyment is more when the lady is also enjoying herself. I am not deluding myself as often in the chat afterwards it all becomes clear. No delusion, yes it is paid and without payment I would not be able to access ladies with whom to have fun. It works both ways as I often have my fun with ladies other punters would not find attractive. They are still randy, I am pleased to say. That way both our egos are happy. (No apostrophe needed).
It may be her 'work' but work can also be fun. My own work is nothing to do with sex but I do enjoy it and it makes people happy so I am happy too.