The question is not the legalization of prostitution, but the normalizing of it.

As it stands, for most people, of both genders, participating in prostitution, is shameful.

How ever, once/if it becomes normalized, you have to ask the question about how men will sexualize women.

Men would no longer need to pursue romance for consent.

Would this mean that men will be able to see normal women as something other than sex objects? Or would it reinforce this thought? Or would their be a spectrum of persepctives.

While consent would still be the dividing line between legal and criminal, your average women would no longer be able to hold her consent as leverage over men's actions. That is, non-consensual sex would still be a crime, but men would have less need to meet a women's qualifications.

It could also, further, reduce men to mere bank accounts. As a man's personal qualities, no longer matter, only his resources.