[MarchHare]

As a person at the oldest end of Gen X this was the exact same thing we heard about ourselves. I don't think it has come true but it seemed that way at the time.

There actually is some truth to this, at least in the United States.

From wikipedia:

In economics, a study (done by Pew Charitable Trusts, the American Enterprise Institute, the Brookings Institute, the Heritage Foundation and the Urban Institute) challenged the notion that each generation will be better off than the one that preceded it.[25] The study, 'Economic Mobility: Is the American Dream Alive and Well?" focuses on the income of males 30-39 in 2004 (those born April, 1964 – March, 1974) and is based on Census/BLS CPS March supplement data.[26] The study, which was released on May 25, 2007, emphasized that in real dollars, this generation's men made less (by 12%) than their fathers had at that same age in 1974, thus reversing a historical trend. The study also suggests that per year increases in the portion of father/son family household income generated by fathers/sons have slowed (from an average of 0.9% to 0.3%), barely keeping pace with inflation, though increases in overall father/son family household income are progressively higher each year because more women are entering the workplace, contributing to family household income.[27]

Emphasis added.

http://en.wikipedia.org/wiki/Generation_X