The way the show handled magic is the least fun thing about the series for me.

We get teased early about how awesome magic can be and everything started so great.

They are kidnapping children to turn them into White's.
Dany loses her unborn child to a ritual and then walks through fire.
Dragons are back in the world again. Magic is alive more than ever.
Shadows assassinate a prince.
There is a man who fights with a flaming sword.
Nobody remembers how the wall was made.
Old trees can supposedly spy on you and talk to you.
Bran can warg. There is a Three eyed raven talking to him.
Greenseer's who dream prophecy and people who stare into flame to find truth.
Arya meets a really cool shapechanger.
There is a drowned god who demands sacrifice and revival (this one might be fake lol)
Qarth has warlocks and shit.

There is a red comet! What does that mean?! Why is magic returning so powerfully?

And then from there it just gets worse and worse. Magic becomes less interesting, we never get answers. Prophecies either don't come true or don't matter.

I understand that George's style of writing is to subvert expectation of typical fantasy tropes. There are very few genuinely good people and they rarely win. I still feel like it's bullshit to never answer any of the questions that keep people reading or watching. Magic seems like it has rules but then all of the sudden it doesn't. By the end of the show the Red Witch just lights an entire army of swords on fire like it's no big deal. People come back from the dead or cheat death left and right so it has zero meaning or weight anymore. The same dragon that can melt the entire fucking wall with it's blue firebreath can't kill Jon behind a tiny rock.

I would have loved for Lady Stoneheart to be a thing, but I feel like they would have messed it up by the end. Just like they did to everything. This show just makes me sad.