Five reasons to give thanks for the financial collapse of the decade.

One of life's rules is that there's bad in good and good in bad. The total collapse of the U.S. financial system is no exception. Even in the midst of the current financial despair we can look around and identify many collateral benefits.

A lot of attractive office space seems to be opening up in midtown Manhattan, for instance, and the U.S. government is now getting paid to borrow money. (And with T-bills yielding 0 percent, they really ought to borrow a lot more of it, and quickly.)

And so as Morgan Stanley Chief Executive Officer John Mack blasts short sellers for his problems, and Goldman Sachs CEO Lloyd Blankfein swans around pretending to be above this little panic, we ought to step back and enjoy the positives.

To wit:

1) We finally get to see what's inside these big Wall Street firms.

We've just witnessed the largest bankruptcy in U.S. history and we know neither the inciting incident (though there is speculation that sovereign wealth funds decided to stop lending to Lehman Brothers Holdings Inc.), nor the deep cause. But there's now a pile of assets and liabilities smoldering in New York awaiting inspection.