Do you ever have the sense that Glomgold and McDuck had a long standing "life mate" sort of relationship going for them before the nephews arrived? Like, every time there was treasure, there they'd both be with their little hats and silly pants. Yeah they'd fight, but they both understood what the other wanted and could respect that. Then Scrooge finds these nephews and all of a sudden he's not as intently focused on the gold. He's drawing lines in the sand about "morality" and "not killing the civilians." Of course Glomgold is pissed! He got dumped at the ripe old duck-age of 60!