Black Friday: Why do we do this to ourselves?

Shoppers rush to grab electric griddles and slow cookers on sale for $8 shortly after the doors opened at a J.C. Penney story, Friday, Nov. 23, 2012, in Las Vegas. Black Friday, the day when retailers traditionally turn a profit for the year, got a jump start this year as many stores opened just as families were finishing up Thanksgiving dinner. Stores are experimenting with ways to compete with online rivals like Amazon.com that can offer holiday shopping deals at any time and on any day. (AP Photo/Julie Jacobson)