Very interesting question Lon! Last year, I actually figured out how long my savings and investments would last if my pension and social security were cut by 50% and 23% (predicted for SS). I like doing these types of calculations and because of the trouble many pension systems are in, I know such a cut wouldn't be far fetched. Assuming my investments do at least half as well as they are doing now, that inflation averages 3.5% annually and that I have no catastrophic events, I could live close to 8 years with no pension and SS. I fare WAY better at 50% & 23% with my money lasting for 100 years. LOL