I insist that unless a given "crime" involves force or fraud or people under the legal age of adulthood then it should be legal. Prostitution, of course involves two (or more!) adults and an agreed-upon exchange of money for services. It is, in short a business transaction no more or less than buying a loaf of bread or trading on the stock exchange. Imagine what we could do if our legal justice resources were freed up from these silly and impossible enforcement tasks!