I don’t think you get the point.
“legalization” only increases the problem.
By “legitimizing” the industry all you do is increase the demand, lower standards of decency in the surrounding community and invite the “illegal” participants to find ways to operate just outside the “legal” perimeter.
Result?
more human trafficing - more prostitution - degradation of the community.
But in all my years of dealing with humans, often engaged in activities which injure others, I have come to believe that it's impossible to stop and make everyone 'behave' to a standard imposed by another.
Moi is saintly of course, but that's cause I'm older and have grandkids who would quickly hear of any shenanigans.
Some folks have a very strong desire to literally control others, prolly having to do with improper toilet training when they were young.
One cannot regulate the behavior of others without a totalitarian state.
It's just a matter of degree. Look at the anti-smoking and gun control crowd, same people as the political correctness crowd, and we know what's good for you-and-the-earth-is-warming-only-Algore-can-save-us crowd.
Of course we want some assurance that we are not going to be harmed by others, so therein lays the basis for government
Do we not regulate doctors? In my state even hairdressers are regulated with a huge bureaucracy.
Jesus of Nazareth has a number of comments about those who seek to regulate others.
(and I did get a kick out of your link. Any jpeg with "Lesbian" is automatically suspect unless it's from the late & great Sam Kinnison ;^)