A rather conservative, and out of touch, Labour MP in the U.K. wants to ban prostitution ads and the like on sites.
As has been learned from other countries though, women had a tendency of turning up dead and going to even less safe conditions on the streets when white knights passed "clever" solutions like this.
Perhaps, it is because allows someone to act independently.
Perhaps, it is because they can better screen clients.
Whatever it is, it is better.