In "Nothing to Fear", Magica DeSpell used real-life images of Uncle Scrooge & co.'s worst fears to descend upon them. For Uncle Scrooge, this took the form of being told by Huey, Dewey and Louie that they secretly couldn't stand him and resented having to live with him. In the end, the way to drive off the nightmares turned out to be to confront them with reality.
Uncle Scrooge: My boys love me — so you're not my boys!
And he was right.
Note that his nightmare did not involve poverty. His love for his nephews is all he cared about.
And earlier, one of his nightmares involved seeing his money bin totally empty, and the bill collectors hounding him. He asks them what they'd possibly want since all of his money is gone. They state that they'll take his nephews away from him. His worst fear was losing his boys over his money.
The animated version of "Back to the Klondike" may have been drastically changed, but the ending is just too sweet and beautiful and genuinely romantic not to make your heart melt.
In the episode "Once Upon a Dime", Scrooge tells the story of how he developed his fortune, with his nephews constantly asking him if that was when he got rich. Finally, at the end, he tells them he only felt rich when the boys and Webby came to live with him and he had a family. Just great.
One for the comic books. In issue #4, a dispirited Scrooge gives a brief one.
Launchpad: "...I feel like we let you down."
Scrooge: "Launchpad, you never have let me down and never will."
In the last issue of a cross over with Darkwing Duck, Scrooge and DD discuss why they bring their kids along on their adventures. While DD states that Gosalyn usually sneaks along despite being told otherwise, Scrooge says that the long term benefits (seeing the world, the lessons learned outside a classroom) are one reason. The truth is that Scrooge can't stand being away from them for too long, and that he doesn't want to drive them away like he did his immediate family in the past.
In one episode, Scrooge falls under a love spell that has him ignoring his family and his business. Huey, Dewey, Louie and Webbigale find out a way to break the spell is to threaten to take away the one thing that the person truly loves. So what do they do? Trick Scrooge into thinking he'll lose his wealth if he stays with the woman he's with. However, it doesn't work and Scrooge seems to willfully part with his money. It's only when the kid's lives are in danger that Scrooge snaps out of his spell in order to save the children under his care.
In the very first episode, as Scrooge is having a TV interview over his industrial growth, a reporter notes how his family must be proud of his success. At this point, Scrooge stammers, unable to quite divulge on the subject. Eventually he admits his life has actually been pretty lonely until his nephews came along, at which point it comes to him, he has "the boys", speaking proudly and eagerly of their spunk and likeness to himself, oblivious that at this very point they are indeed vigorously trying to protect one of his treasures from the Beagle Boys.
In Home Sweet Homer Huey, Dewie, and Louie all talk about how they want to grow up to be as just like Uncle Scrooge, and then argue over who's the most like him. Scrooge's proud look while steering the boat says it all.