A stark reality of retirement planning is that your future is riding on the quality (read: plausibility) of your assumptions. Abject optimism can be dangerous.
For example, eight years into this bull market, expecting stocks to deliver as-strong returns over the next decade is
"If you plan on working longer as a way to get by in retirement, you are going to be in trouble," says Craig Copeland, senior research associate at EBRI. "It should be a complement to a solid savings and spending plan, not the foundation."