What is it like to grow old? Only the elderly can tell you. John Doyle is 88. What is it like to live in an elderly retirement community. Only one who lives there can tell you. John Doyle does. These are questions of great interest to some 37 million people in the U.S. over 75 and many times that number of children and grandchildren. The latter may be stunned to learn what kind of life their beloved parents and grandparents are experiencing. These...