There is no need to argue about the issue of legalizing prostitution since it has been tested and failed to produce better conditions for the people in prostitution. Just look for reports on the results of legalization in Germany for example, where the legalization increased demand, expanded the "market," and increased human trafficking.

Regarding your conviction that it "keeps a natural lid on male aggression and violence." I would argue that it is completely false and degrade men, but if you insist I would urge you to volunteer to the joy division and keep the lid on male aggression and violence yourself before volunteering other people to do the nasty job.