We will have to agree to disagree, analyst. If I borrow $500,000 from you, then I owe you $500,000. The fact that I choose to use that $500,000 to pay far too much for a shack, or throw it down a well, or plough it into my business, or whatever… is irrelevant in my eyes.
Any arguments designed to deflect blame from me for failing to repay that debt to you just ring hollow to me. “I don’t need to repay you because Johnny stole my ice cream”. My reaction? So what. get over it and repay. Think more carefully next time you use other people’s money.