Agreed, and I would also legalize drugs.
Think of it, between prostitution and drugs, we could wipe out a very large, expensive chunk of government bureaucracy which exists only to fight the war against personal choices. Billions of dollars to be saved there.
They would both generate (conservatively) billions of dollars in tax revenue.
And in the process many gangs that make their money from illegal activities would find their revenue sources have disappeared.
Including the drug cartels in Mexico and the rest of the world.
It makes no sense to continue to fight the wars on choice, but yet...our government continues to do so.