Just to stir the pot a bit...
Anybody notice that when the major companies took advantage of a change in government policy that allowed big corporations to do away with the traditional pension plans in favor of cash-balance 401(k) plans, that the sudden growth of investment dollars (since the workers had to put their retirement money somewhere) fueled a lot of the dot-com company growth, and that the resulting bust of the dot-com revolution and the loss of said retirement money caused many workers to save instead of invest, contributing to the econominc downturn we're experience right now?
Just think, if your company had a pension plan, you wouldn't be sweating over your 401(k) quite so bad.