Should prostitution be legal?

Even the UN is in favor of legalizing prostitution globally pushing it as an optional occupation for women. Now I'm picturing single mom's hanging a shingle on their porch with a red light and she is "working" while the children are doing their homework. While I understand the idea of consenting adults, of enterprise, of supplying a need, there are other considerations as well. Do our children deserve to have a decent childhood or not, or is the only consideration what adults seek ? One country with legal prostitution will not give welfare to women who could prostitute themselves to earn money. I personally do not find this to be a great idea unless it is separate from the home and well regulated. Not sure what kind of a world we are moving into.