damaged and unfit housing

This one can not be overstated. I drive past many of these on my way to work every day. Many of them are damaged and unfit because someone died, and no one wants to move out to bumfuck nowhere, even if the house is cheap. So they just rot. Even when I lived in Chicago, there were always houses that had just been allowed to fall apart through lack of maintenance, houses that had become too expensive to either repair, or demolish and re-build.