Have you ever said, "I'm just going to eat one handful of these potato chips" and then eaten the whole bag? Or, say, gone on a beach vacation and decided you wanted your career to be lying out on the beach all the time? That's the thing about getting what you want; it usually makes you want more. Whether that's more of the same thing or more of something impossible to get depends on how you roll.
Now, if that doesn't remind you of Bartholomew and the Oobleck's King Derwin, we're not sure what will. Dude is King. Of the kingdom. He's got super-cool fiddlers and magicians and people to wait on him hand and foot. But none of it is enough, because he can't control the weather.
Just because the King (can't get no) satisfaction, everyone else has to suffer, including poor Bartholomew Cubbins, who was already stressed out enough schlepping all over that castle to cater to the King's whims, #thankyouverymuch.
Dissatisfaction is the theme to beat all themes—the main character problem and driver of plot.
Q: Why isn't the King happy about anything?
A: Because he's always been given everything he's ever wanted without ever having to work for it, so nothing seems special.
Q: Who can give the King what he wants?
A: No one. Change has to come from within, oh young one.
Q: Why is the King so mad at everyone?
A: He's a king. They do that. Also, he's unsatisfied.