I cried and cried and cried for days (perhaps months) when the Go-Go's broke up the first time in May 1985.
All seriousness aside, politically, the greatest event was RR’s 1980 election; and personally, it was my marriage in June of 1987 to my wife of, now, 21 years.
My sister cried and cried when Rick Allen from Def Leppard had his accident (1984).