Man, you guys have a radically different idea of the home owner/bank relationship than I do, is all I can say. It almost seems like you guys think of the bank as a principal investor in the home as a self-run business, and the owner is the customer. I don't think about it that way at all. I think of the owner as, surprise, the owner, and the lender as, surprise, the lender, who is making an investment in the owner's interest, not the home. When the customer walks away, he's leaving the bank with an undesired commodity in "exchange" for his lost interest. That's like leaving a computer program source code in place of a car at the dealership. Sure, to you as a programmer, it's a salable, desirable commodity, but the dealership wanted your money. They take the code because it's the only thing of value they can legally get from you, but it's a big hassle. And it's wrong, because you used a protection clause (essentially garnishment) in place of money. On top of all this you're doing this when you have more than enough money to pay for the car, simply because you like think it's uglier than the neighbor's shiny newer model. Boo-frickin'-hoo. You chose the car. You entered the contract. You may have adhered to the letter of the contract, but not the spirit, by using a loophole that exists for protection just because you're being a whiny baby.
I mean is it the credit card company's problem that your gold watch is outdated and worth less than you paid for it? Should you dispute charges? After all, gold typically appreciates. You could point out again the legalities and the contracts, but really, I find that meaningless in the face of what I thought was an obvious ethical no-no.