A couple of years ago,  I had a particularly memorable experience when I was working in the consumer banking channel in a retail bank. A woman in her 50s was screaming and calling us liars and cheats and making a din in the bank. She had lost around $100K investing in a lehman brother linked structured product, which is her entire life savings.  This woman would drop by our branch and demand to speak to the manager at least once a week. Eventually after 2 years of harassing the the bank’s management, she managed to recover only a small part of her investment. It left a strong impression on me as I never realise that a flawed investment decision can drive people nuts!