Uh oh, an appeal to "society". Who knows what that means?
The line of reasoning that says, "It does not violate my physical rights, so it should be legal" defense is invalid here, I believe. If, for instance, two people publicly engage in intercourse on the sidewalk, it would not stop me from going to work, earning a living, etc. But should that be somehting we are forced to live with? By the same token, should families be forced to raise their children around the moral and physical filth that open prostitution engenders.