I gave up on it sometime last year. Mrs WBill still watches, though, and I catch a little bit on the periphery.
They've killed off most of the original characters. As the actors leave, it seems that they're writing other characters into their comic book roles - see above comments re: Carl/Henry. The current big bad guys - the Whisperers - aren't as big or bad as I remember them from the comics. They started out with a bang, and have quickly tapered off.
I'm half interested in seeing what the Commonwealth looks like. Also, when they removed Rick, the producer of the show hinted at movies or mini-series ... that might be interesting. 2-4 hours of action, rather than 2 minutes with 58 minutes of commercials and filler.
Largely, the series as it stands right now is a big "Meh", as far as I'm concerned. Lots of posing. Overly dramatic exposition. It's turned into a daytime soap, only with less pretty characters, and more zombies. You could probably find better things to do with your time than binge-watch Seasons 8 and 9.
Yep. Only two remain.