The Bergens eat Trolls, during an annual festival named Trollstice (thus justifying the film’s "holiday season" release date), because the Trolls give them bursts of pure happiness or something.
Anyway, there are hints here and there that the Bergens can find happiness without eating tiny living things who enjoy singing and dancing, that true happiness comes from within. It’s meant to be vaguely anti-consumerist, which is kind of rich for a movie based on literal toy dolls.
But is this true? Can you ever truly attain happiness? The characters in Trolls find a way to move toward a kind of inner serenity, but we only see their first steps. Who will they be 10 years from now, when singing and dancing are no longer enough? On that day, the Bergens might turn, again, to the simple joys of munching on Trolls.
I’m saying I wouldn’t be too comfortable if I were a