Prostitution in some form or other has always existed, and probably will always exist. One of the problems is that some of the activities linked to prostitutions are dangerous, and sometimes illegal. Where it is illegal, it is often controlled by criminals, who run brothels as they run a black market. There is also the problem of human trafficking, prostitutes are often forced to work. They are also prone to being exploited. Some people say that making prostitution legal where it is not will not solve these problems. The same people would run the businesses, but they would no longer be criminals. The situation for the prostitutes would probably not change much, as the ways the former criminals run these businesses would not change much either. Other people see a different problem: Legalizing prostitution would lead to some legal prostitution, that would well-regulated, and probably worked well. On the other hand, there would also be the illegal prostitution, which would not change much.