Ten years ago, two series premiered that marked a significant shift for Western animation: Adult Swim’s “Rick and Morty” and Netflix’s “Bojack Horseman.” Both achieved immense popularity and received much acclaim for their snarky humor and in-your-face characters. One aspect that these series have in common is their protagonists being overwhelmed with a deep miserablism, permitting the audience an indulgence. That nihilism prevails and nothing matters is a principle that is now the driving force for adult animation.