When I first grudgingly dipped into episode 1, four years ago, I thought it was an unlikely setting but a typically zany and shallow sitcom. Leaning on Kristen Bell's following (since staring in cult hit series "Veronica Mars")...But it repeatedly subverted my exceptions for the better, in terms of both continual plot twists and a liberal peppering of popular philosophy references (both explicit and situational). I liked its low-key ridiculing of contemporary theological beliefs that stopped short of stomping all over religion (from my heathen point of view).
There's a perpetual ambiguity of context - the show might be attempting to dramatise an actual spiritual afterlife, but there are myriad stylistic touches that scream of technological simulation. From Janet being a high-end sentient Alexa/Siri, to computer terminology or rebooting the neighbourhood, deleting and restoring memories, etc. Also, to cosmological concepts, with regards to the non-some of the non-human characters.
So I'd actually class it as science fiction. And the best type of sci-fi, in dealing at length with serious mid-deep future issues: digital sentience (e.g. via mind uploading), infinite torture, unlimited life spans, etc. As well as the moral philosophy of day-to-day living. Big brain stuff, all wrapped up in a (potentially) popular, approachable presentation.
Spoilers: Seriously, watch the end of the show first, if you're going to!
