I didn't dislike it, but I found two aspects distracting.
First, to me, the theme of getting to choose the moment when you're definitively done with existence VERY strongly echoed the discourse on assisted suicide that has been a recurring topic in national politics where I live for a few years now. Initiatives have emerged asking to extend the right to euthanasia to non-terminal illness cases as well; i.e. to older adults who simply and plainly feel they are "done with life". Despite it being kind of a controversial topic, I don't really have a strong opinion about it, but seeing the whole debate play out allegorically in a sitcom is a little otherworldly. Viewing it through this lens, all I could take away from the ending was a resounding endorsement of the right to self-termination, which I hadn't expected from a US show... but then again my understanding of the American outlook on euthanasia is minimal.
The other thing is that I thought their reinvention of the afterlife had a bit of a having-your-cake-and-eating-it feel. Under the new system you get an eternity of happiness (Abrahamic religions rejoice) AND an eternity of cold, hard nothingness after that last one AND a sort of rebirth/reentering into the lifestream in the form of positive vibes? Aren't these systems completely at odds with each other? Also, now I may be misremembering the details of it, but I got the impression they made it so that you can still rack up points during the afterlife, so you're not completely boned if you've spent your single shot at life poorly. But then where does that leave "real" life? At that point I'd say your "real" life becomes as insignificant to the entirety of your existence as, say, your time spent in the womb is to your life after birth.
With that being said, the ending suited the show well, including the overall tone, and provided closure in a way that not a lot of sitcoms manage. And it's nice to see a comedy shoot for something a little more conceptual. Doesn't have The Young Ones beat though.
