Joking aside, prostitution has rightly been described as the oldest profession. The sex industry is the best earner in the world....no matter how poor the country, there will be porn, bordellos, tarts and all the associated paraphernalia.
As such, it makes sense to regulate the industry. A couple of years ago I had dinner with a delegate from the IUS (International Union of Sex Workers) which is affiliated to the TUC. This woman, an Oxford graduate, specialised in bondage and domination and had several well-known clients, which, like a true professional, she refused to name in spite of my continual urging (and suggestions that if they were Tory or Lib-Dem politicos she should thrash more energetically).
I agreed to help with campaign literature etc. - they are aiming to change the law which states that two or more sex-workers in the same premises constitutes a 'disorderly house' and is therefore a crime.
A regulated sex industry would include sex education, the need to protect minors, measures to deal with all sexually-transmitted diseases and of course taxation, as is the case in Germany, where brothels are legalised, are discreet and are subject to regular and frequent medical inspection.
So Valencia is on the right track.