Peggy Noonan at the Wall Street Journal looks at the people and their mindset to explain the irrational risk taking.
The sale of antidepressants and antianxiety drugs is widespread. In New York their use became common after 9/11. It continued through and, I hypothesize, may have contributed to, the high-flying, wildly imprudent Wall Street of the '00s. We look for reasons for the crash and there are many, but I wonder if Xanax, Zoloft and Klonopin, when taken by investment bankers, lessened what might have been normal, prudent anxiety, or helped confuse prudent anxiety with baseless, free-floating fear. Maybe Wall Street was high as a kite and didn't notice. Maybe that would explain Bear Sterns, and Merrill, and Citi.