That's a good question really. I never thought about it, but trying to remember my first couple viewings, I too can't think of any scene that made me cry.
However, in my first viewing, I felt sorry and surprised when Fredo joined the fish.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK
