It's harder to walk away from a mortgage than a rental home. It's more work to sell a house. Since the mortgage-payer owns the house, has made improvements on

It's harder to walk away from a mortgage than a rental home. It's more work to sell a house. Since the mortgage-payer owns the house, has made improvements on the house, has an emotional investment in the house, there are strong biases such as sunk cost that make the buyer much more reluctant to get out from under it.