The show has absurd talking animals, ridiculous set pieces and smart pointed jokes about celebrity; but at the end of Season 3, like the two seasons that preceded it, what you're left with is an overwhelming sense of sorrow.
Over the course of each season, BoJack is offered the chance to change his life: through a ghostwritten memoir; his dream role in a movie; or running a campaign to get an Oscar nomination.
By comparison, the lives of fictional characters, whether they live in Westeros or the zombie apocalypse, make all the bills you have to pay and frustrations at work look positively dandy by comparison.
[...] laughter isn't just metaphorically the best medicine, it can also help you more realistically deal with painful or negative situations.
Whether the show is about employees goofing off in an office, plane-crash survivors lost on a mysterious island, or a group of law students learning to get away with murder, at their base these shows are all about how those characters find a new family.
BoJack, at its heart, has always been about realizing there is no happy ending, there are just ephemeral moments of happiness interspersed with the unrelenting pain of being alive.
[...] between those moments when we do get a sudden rush of endorphins -- whether it's from laughter, or winning a Baby's Choice Award, or sex, or any number of truly wonderful instants -- it's all about chasing that endorphin high.
[...] when it comes to watching sad TV shows like BoJack, part of the enjoyment (if you can call it that) is about getting those endorphins; but it's also because they reveal some essential truth about humanity.