After seeing GF so many times, I easily remember my feelings toward the ending, and even at my first viewing, I found it made perfect sense. I thought it was a great way to end. Plus, it was a perfect ending to make way for the sequel don't you think??
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
Plus, it was a perfect ending to make way for the sequel don't you think?? 
