For me:
-The Expanse - The beginning was confusing AF and the politics didn’t make sense and seemed boring, so I quit. But then eventually after like a year or two, went to reddit and it was recommended again, so I just read some light spoilers and that helped me got through the first season. And then it has been an intriguing and thrilling journey.
Despite its appearance, I would recommend being cautious about watching it with a young kid. There are a lot of episodes with scary imagery and such (one of the very early episodes - actually in the anti canon seasons, I think - is about the zombification of the entire population of the world). This continues throughout the show’s entire run, but also existential horror becomes a running theme (especially in the episodes I mentioned for introducing people to the show, which is why I love them so much).
It can definitely be a good show to share with your progeny and there are lots of safe episodes. I’m looking forward to watching it with my kid, but that said, make sure you vet episodes or at least read the description before watching them together. Obviously, this depends on the individual and you’ll need to make your own judgement call about them.
Probably don’t watch this episode with your kid until they’re older:
edit: Edit removed because I tried a few approaches to hide spoilers and none of them worked in my client.