The Nasdaq 100 ETF ( QQQ ) gave up 80% of its value over the course of the 2000-2002 bear. The 80% decline for QQQ required 13-plus years to break-even on a nominal basis, yet it still HAS NOT recovered when adjusted for real purchasing power (inflation). In essence, when everyone around you is feeling triumphant about high water marks in real estate and/or stock assets, it is critical to safeguard your fortress and to minimize the extent of financial harm .