I was expecting a more emotional, and completely different, ending to your story. But, in a way, it was perfect.
Godfather I and II meant Christmas for you, a childhood memory, a sweet sentiment.
The Godfather III is Christmas once you're an adult. It's disappointing, boring, and heartbreaking - if you don't have kids.
At least, that's how it was for me in the last decade or so, but I'm hoping to change it.
For me and my cynical self, Bad Santa became the ultimate Christmas movie for a while now.