The problem with Prostitution as an enterprise is the same as the problem with selling Ivory or buying Xanax on the street. No way to tell if you are getting the product you think you are buying in advance. Once it's open enough to have a Yelp category, the crowdsourcing will deal with that issue and we can go back to whoring being a perfectly legal profession, like it has been in most societies for most of human civilization.

We are only going through a brief Puritan phase in the long view of things.