Aesthetics? Nothing is a good reason for zoning. There. If a business can set up shop in an area and enough people want it there that it survives, it should not be prevented from being there. If there was, say a strip club in a small town and it had enough customers that i didn't go bankrupt, the town has no right to say "no one wants you here; get out". Most zoning laws are asinine and wrong. The free market is the only fair way to "zone" land. Because then people don't just make decisions; they have to put their money where their mouth i, so you see how much they really care about thwta they say.