text: why prostitution is illegal in 49 states of usa? and it is allowed or tolerated in the mayotity of the countries around the world? in nevada, we have found that it's better for it to be legal.  that way all the girls received regular health checks and get "taken out" if they are diseased.    if it's illegal, who knows what kinds of diseases men will get otherwise.  also, in nevada, it is a taxable business.  i expect it's for the same reasons in the rest of the world why it is legalized.