FIVE REASONS not to bother retiring. The nut graf:

[T]he Social Security bulletin from 2011 notes that many fail to accurately predict how happy they will be in retirement. When you combine the high unemployment rate for older workers with the chance you might not be as happy as expected in retirement, it may be better to slowly back off your hours rather than quit cold-turkey.

Unless, of course, you're involuntarily 'retired' by the Obama economy....