If you owe more than the house is worth then theoretically you should default and walk away. I know that question has been debated endlessly and I don't unders

If you owe more than the house is worth then theoretically you should default and walk away. I know that question has been debated endlessly and I don't understand all the practical implications like what it means for your credit rating, or even whether it should be considered ethical. I concede that if defaulting is not an option then you may be stuck if you owe more than the value of the house and can't borrow more money. Good point.