The banks deserve a much bigger share of the blame from a societal perspective. When I make a bad financial decisions, I affect me (and my family).
When the bank makes bad financial decisions, they effect... well, the entire economy as we saw.
Lenders aren't stupid; they have models which are certainly well established enough to know pretty accurately who is and isn't a good credit risk. Yes banks want to make as much money as possible, but far from that being an incentive to make bad loans, it's an incentive only to make loans where the expected reward is worth the risk.
So what happened? The problem is that the banks were essentially coerced into making many of these loans. The Community Reinvestment Act first enacted during the Carter administration and then strengthened under President Clinton encouraged banks to make loans more readily available to less than ideal borrowers. Many of these loans were then repackaged and sold to Fannie and Freddie, which investors (correctly, as it turns out) considered safe because their status as government sponsored entities would preclude them from defaulting.
I'm deliberately trying to avoid placing blame on any one individual or party (not that I don't have my opinions), but the argument is pretty compelling that the federal government's involvement in housing and mortgages intefered with the free operation of the credit market. And to reiterate something I said earlier, banks have zero financial motive to make loans that are unlikely to be repaid.
I spent a lot of years in the retail auto industry, working in areas where we dealt with a ton of subprime auto loans. And while default rates were certainly higher on submprime loans than more conventional loans, they were not excessive. Why? Because subprime auto lenders demanded a tremendous amount of information from potential borrowers. Proof of income, extended proof of employment, lots of references, proof of address via a utlity bill or rental agreement, etc. Show up to buy a car with an 800 credit score and you could finance 110% with little more than a signature. Those with 550 credit scores needed 20% or more down and all the docs mentioned earlier. Were the auto lenders smarter than mortgage companies in making sure they knew the risk they were assuming? I don't see why they would be. They just operated in a less regulated market, and thus were better able to accurately assess risk and turn down loans where that risk was excessive.
So yes, banks have much more effect on the economy as a whole than any individual borrower. But the government can screw things up far more than any number of banks. And this financial mess is a direct result of too much government inteference rather than too little government oversight.
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