Key PointsInflation will continue to drive up living expenses.Aging typically brings increased healthcare costs, and Medicare doesn't cover everything.Social Security may not go as far in the future as it does today.The $23,760 Social Security bonus most retirees completely overlook › At first glance, the idea that you might spend less in retirement than you do today seems logical. After all, once you're retired, you'll no longer have to save fo…