"The good news is that the reasons people gave for being unhappy with retirement were largely financial -- and therefore preventable. Of the 28% percent of retirees who are unhappy, 78% cited income as a reason, and 76% blamed an increased cost of living.... [T]here's a disconnect between expectations and reality for many unhappy retirees, particularly because they overestimate how much they'll receive in Social Security benefits and underestimate how much they'll pay in healthcare costs."

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