Some consider it art.
https://s-media-cache-ak0.pinimg.com/736x/81/54/0a/81540ad9e977483c2df5afcc2072c834.jpg
Besides things were different back then. Things weren't just tossed away back then. There was value there for a generation that eked out every usable bit of what they owned. Those hulks look to have been scavenged for anything useful in keeping other things operating. Now they are a haven for small animals that are prey for larger animals, kinda like an ocean reef. Then there's the possibility that there was a town there that dried up and blew away, before that generation got a chance to sell as scrap.
Bill