People are morons. My business is right next to a shopping center and there are at least two carts in front of my place every day, since they roll down the hill.
Well, screw them. I don't return them. I throw them further down the hill into the woods. As far as I'm concerned, the shopping center is at fault for not having cart returns in the parking lot, and for not having a curb to stop them from rolling on to the street and down the hill, and eventually right in front of my place.
All the garbage from the shopping center blows down the hill, too. The neighborhood looks like a god-damned dump.