Earlier quoted context omitted.
I wonder as well. I think we all forget how important credit reports are in giving banks comfort to lend (not that this is the only way to do it, but it seems that this is the current way). If people can default on a uncollateralized loan with no ramifications, no bank would lend and the credit engine would shut down.
People also forget about of rule of law. I defaulted on my loan? Sue me. Want to give me a loan? Search for me in public court records.
Besides, it's not only the bankruptcies that count. Good tradelines are also important, and those are not public.