INCEST

[Dystopia]

I wouldn't go so far as legalizing prostitution. It would become too easy for wicked people to legally exploit vulnerable and desperate people. Also, human trafficking, pimping, and pedophilia would be too easy to conceal from "regulators" and law-enforcement. I don't think trying to emulate the Bunny Ranch nationally would work. Those abuses seem to invariably accompany prostitution.

Which is nothing compared to how easy it is for those desperate and vulnerable people to be exploited right now because there is NO regulation throughout most of the globe. The sex industry is mostly composed of unwilling participants abused on a regular basis precisely because the trade is controlled by criminals and illicit organizations. The best way to destabilize groups like that is to decriminalize whatever service or product they monopolize and provide a legal venue for its acquisition. Even if they could find loopholes, the very fact that it's been legalized has significantly reduced their influence since they are no longer the most attractive service providers. 

If every country legalized and regulated prostitution, there would be a MASSIVE dip in human trafficking globally.

No evidence for that since it has never happened - I don't htink it is that simple because human trafficking is (1) not only for sex purposes (2) sex slavery isn't just prostitution. Unlike what some people think, a lot of sex slavery actually happens and starts when you're just a child with your parents using you as a product and then you are forced to work in lots of awful scenarios which can include brothels but also other kinds of services that mere regulation won't prevent.