There are many pro legalization prostitution posts here. Actually this blog is not mainly about that. Here is the main ones:
War should be replaced by politic and politic should be replaced by commercialization.
Yap you guess it. That means commercialization of sex, drugs, organs, land (such as for countries with land dispute), and so on. At the end everything should be commercialized.
Reason is close to useless in politic
Humans are inherently subjective. We care about our interests, not truth. If a certain belief support our interests, we will defend that no matter how wrong it is. Hence, reasoning is futile.