As can be seen in the thread of these posts, it's all about the money and the fearful climate of our financial crisis. If you've read anything about the Great Depression, or know people who have lost jobs and perhaps their houses, you can get a sense of why people are fearful about money. We realize that many businesses are in the same boat as the American public, simply trying to get by. The sense seems to be that if we weather the storm and get through, things will be easier—then we can all make financial moves we are afraid to make now.
In terms of commercial paper, if something is unsecured, it's like playing the stockmarket. If the stock bellies up, the money is gone. However, the difference is that the stock market can turn around (as we have seen recently) and the value of stocks can increase. Money lost on a note for which no collateral has been put up, will never be seen again. It's too great a risk to take in this financial climate.