They are all too common. Provided by Brad Tiche Many households think they are planning carefully for retirement. In many cases, they are not. Weak spots in their retirement planning and saving may go unnoticed. Couples should recognize that they may face major medical expenses. Each year, Fidelity Investments estimates how much a pair of newly retired 65-year-olds will spend on health care throughout the rest of their lives. Fidelity says that on average, retiring...