When we promise "in sickness and in health," it may be a mercy that we don't know exactly what lies ahead. Forcing food on an increasingly recalcitrant spouse. Brushing his teeth. Watching someone you love more than ever slip away day by day. As her husband James's Parkinson's disease with eventual dementia began to progress, writer Susan Allen Toth decides she intensely wants to keep her husband at home--the home he designed and loved and lived in...