The Society of Professional Asset-Managers and Record Keepers says nearly 73 million Americans, or just under 50% of our working population, now have a 401(k). And collectively we pour more than $200 billion into these accounts each year. But retire rich? Don't bet on it. The average 401(k) has a balance of $45,519. That's not retirement. That's two years of college. Even worse, 46% of all 401(k) accounts have less than $10,000. Today, just 21% of all U.S. workers are covered by traditional pensions, and the number shrinks every year.

In practice, 401(k)s haven't been nearly so rewarding. When Boston College's Munnell looked at the returns 401(k)s have actually produced compared with the projections, the difference was sobering. The average 55-to-64-year-old should have a 401(k) balance of $320,000. In fact, at the end of 2007, the average 401(k) of a near retiree held just $78,000 — and that was before the market meltdown.

Read Time Magazine's 401k Article