Maybe my favourite book series! Intelligent dialogue dealing with consequences of even minor decisions. The hierarchy is criticised constantly, shown for being trivial, hypocritical and based almost entirely in violence and threats based on strength in numbers (implied and real).
I can't choose a favourite character or arc, but I really love ADWD for really elaborating on and setting up new goals for stories that had more or else finished their first act.
I also enjoy that while GRRM indulges in 'pure evil' characters such as Joffrey, The Mountain, Ramsay and Euron (Read that TWOW preview chapter- it's Godly!) he still establishes that most people commit horrific acts while being actual complex people in a shit system (Theon, Jamie, Stannis).
Main two characters also should be noted are a staunch abolitionist (Dany) and a man who sacrifices himself for refugees who he successfully migrated (Jon). Considering the ramifications they both faced for their decisions they both managed to be awesome, intelligent and compassionate, despite the consistently horrific implications and threats.
What are your favourite characters, arcs, worldbuilding or quotes? Any real life political figures you'd like to compare to ASOIAF characters?
It wasn't just the finale, narratively the show fell apart at the end of season 4, which equates to the end of ASoS. Even then there were parts of the earlier seasons that went a bit off the rails. I just pretend that the show got cancelled after season 4 because those are still worth seeing and the rest was some fevered nightmare I had.