I feel a bit sick when I see perfectly reasonable nice women who are in their forties working as prostitutes cos they can do, or think they can do, fuck all else. The nice thing about intelligent students who do it to pay their government extortion-for-tuition fees is that they get over it and get a decent job afterwards. What do they care if they feel sick while shagging an old guy who is quite nice to them? They eat decent meals afterwards, and concentrate on their studies while their flatmates are wondering how to make a tin of baked beans last two days. Do you think if she got a job cleaning toilets she would feel wonderful scrubbing poo off the sides of the lav? It is quite ridiculous to my mind focussing on the WG's feelings while you are fucking her. If you want her to feel good, just put the money through the letterbox each week with a box of chocolates and offer her a decent job with a fantastic wage. Otherwise just treat her decently while she gives you the service that she has offered and which you have paid for. (Decently = be polite, clean, gentle).
If her a girl has been trafficked or forced that is another matter, and damn right you should feel sick. Not when an competent adult has decided to do something of her own free will.
Another one that makes me sick is guys who constantly complain about her "being my daughter's age" when she is over 18. If your daughter is 18 and over it's about time you saw her as an a responsible adult. You don't have to imagine someone fucking her any more than she wants to imagine you fucking her mother. But to confuse a member of your family with a prostitute for no other reason than an apparent similarity of age is a bit sick in my opinion. At what age does your daughter / the prostitute you are fucking have to be for you to stop confusing the two?? If you are 60, presumably may have a daughter of 30. What is worse, you are projecting a moral judgement on other punters who don't have such a neurosis. It is a common phrase of abolitionists: "Imagine it was your daughter!" Well go on then imagine it, and don't fuck her. In fact don't fuck anyone while imagining they could be your daughter, and if you have such poor control over your imagination, god help your daughter.