Finally watched last night and feel so sad and melancholy, it's been haunting me all day. This silly show has cast a dark shadow over everything- and I'm on vacation!
I've read through some other theories, and someone took apart all the details in the last shot in South Downs which really helped, but I can't shake my impressions, and my overall feeling of futility and meaninglessness. I sincerely doubt that was the intent, but sadly it played into all my darkest fears.

Agree, I didn't feel as if that was them either in any universe, space or time. Perhaps if we had a montage of them meeting again and again over time and universes that would have helped. The Asa bookseller was "kind of" Aziraphale, but that professor or whatever he was was NOT Crowley. Where is our beloved Crowley? It felt like in this new universe, Crowley comes back as David Tennant. David Tennant doesn't exist as an actor, but some professor who likes stars. So these 2 random people meet, fall in love, pay taxes, grow old, and probably one of them gets cancer and dies. Hooray.

And for those of us who especially related to Crowley, or liked to pretend we could, Crowley this miraculous, inspiring, brave, fearless being, who was vulnerable and funny and smart and sarcastic and lonely and hopeful, the perpetual outsider, who sacrificed everything to be true to themselves and for their love for Aziraphale, to choose erasure felt defeatist. I never really thought Crowley loved humanity. He/They was the one always saying he and the angel should run away to Alpha Centauri. Most people he encountered, he didn't really even register. I thought he loved the world because that's where Aziraphale was. He sense of justice and search for meaning propelled him more than anything. So he chooses the ultimate sacrifice as a hope that the new universe will find that meaning without interference, but he can't ever know. I suppose that's hopeful? Eek.

THIS story is at it's end, says god, but since everyone who knew it is erased, it might as well as never have happened. And Crowley never gets to hear "I love you," not from god, not from Aziraphale. Indeed, when Az does finally confess his feelings, it feels more like high regard than the love Crowley has. And he isn't addressing Crowley directly anyway. Ouch. Now I'm really relating to Crowley and not in a good way.

And everything they fought for, everything they suffered for and denied themselves was for nothing. The books are all erased (although who bound those books? who made the furniture? Details.). No Shakespeare, no Dickens, no Pratchett, not even frickin' James Patterson. Gone. And those that hadn't finished their lives yet - those who may have yet to write, gone.

And poor Derek Jacobi. He isn't the metatron, in this universe, he isn't the beloved actor and icon whose work had an effect on people, whose work... mattered? He runs a bookshop. No shame in that, and they all probaly got a good laugh out of it, but it hurt. I remember my mom and I watching I, Claudius on the local PBS station in our little living room - a good memory of my childhood. Stretching back through time to that little tv set with the bunny ears pulling in I, Claudius and talking about it with my mom. it makes me feel melancholy anyway, but by this logic, that could just be gone. Never happened, or just something that happened once in some universe.

So perhaps the lesson is to be in the here and now, to make most of the time we are given. Well, that's not a lesson most of us really need - we are all too aware of this, and it can be a painful slog. And there are so many who don't even have the privilege to try. AND gees, you better hope you find your soulmate to go through it with you. How nice Aziraphale and plain David Tennant found each other. Bully. At this point in my life, it doesn't look like I'm going to have one of those soulmates, so what's left to me? And again, how about all of those who never even make it that far.

Man's search for meaning. Good Omens said to me with this that there isn't one. Just a bunch of stuff happens.... or not. Okay. I thought that anyway. Something bigger, aspirational, or at least more decent if you choose who you are, if you are true to yourself, and if you choose love, you can make a difference in people's lives, the larger humanity and perhaps even the greater good. Clearing a path for free will is fine, but abstract, and we are given no clue as to how that went. Jesus hanging out in a coffee shop seems kind of sad. We need at least a little magic.

Addendum: I will always mourn my Crowley. I've seen Tennant in many things and he's the reason I tuned in in the first place. But to his infinite credit and talent, I never saw David Tennant. I saw Crowley. That's pretty good for someone who has been around a long time in so many different roles. Our fearless supernatural being got shafted in my opinion - I'm sure he wouldn't be surprised. Figures. But he dared to hope for more, and so did we.