STDS are a joke. Legal sodomy is far, far, far more likely to cause STDS, and by that I mean ones like AIDS that kill you. Far more people die from smoking and drinking, yet both are legal. The truth is, legal prostitution is very safe due to health checks. If it's legal, no pimps, no underage girls, and no trafficking. When it's illegal, all that crap happens.
It's harmless, sinless, and natural. It stops rapes, and other acts of violence. This is another one of the millions of reasons why Europe is better than America.