Father is so much kinder than he used to be, home is like heaven!
Suddenly Scrooge's Father was kind, and he sent for him to come home forever, at Christmas?
I just dawned on me... Maybe those Ghosts visited his father years before they visited Scrooge himself? Seems like we see two men change much the same way in the same tale... Maybe they changed for the same reason?
Just a random thought.
"But I was so much older then, I'm younger than that now"