I can't imagine wanting to have sex with someone who didn't want to have sex with me, I would feel so gross, so repulsive. We need to look at creating a society where this is not ok in men's heads.
Look, as a man the idea of having sex with someone who does not sexually desire me, I feel the same way as you, the idea repels me. Nothing to do with morality, it simply repels my sexuality. I, sought of, understand and accept the perspective of some men who are dysfunctional and deluded, but the bulk of men who use prostitution services seem to be those I would happily pack on a rocket ship and send off planet.
But that said I lived with a woman for three years and, as an idea, it was quite 'OK in her head' to pay for her sexual satisfaction from a man (although whether she ever did or not is unknown to me). I have met other women who felt the same way. I suspect (purely personal speculation) that the proportion of women who would 'feel OK in their heads' about the idea would be very similar to men. I think that the 'thinking' you are talking about is not nearly as gender biased as you might believe. I think its simply far more rarely acted out in women because men are commonly more compliant in providing sex when women seek it, as well as women being more cautious in terms of behaviour and safety about seeking paid services. Also the supply of services to women is far less prevalent, and the uncommon nature of it further suppresses use of it.