that is some seriously delusional thinking sir. The underground sex trafficking you refer to is not of the variety that would be legalized. Legalizing the trade of certain favors for money would do nothing but INCREASE the incentive for pimps to force people into the sex trade.

If it is legalized, the market for it will increase, and if not increase it will stay the same. More demand means there is room for more supply, there is only so much supply that one person can offer in this case. For the most part, all the people that want to work the streets are already doing so in some way.