It felt sadly symbolic that a year largely defined by its unpleasant moments ended with the death of Betty White, the Nicest Woman In America.When she died Friday at the age of 99 and 347/365ths, Betty White remained what we telescope our mother or grandmother or favorite aunt to have been — a perpetually nice person, always upbeat, never a harsh word about anybody or anything. Without suggesting any negative inside information about Ms. White, that probably underestimates her. It makes her s...