I finished the show, and I'm only disappointed that it ended so predictably. Everything went full fan-fiction three seasons ago when they caught up with the books, so the ending didn't surprise or anger me like it did everyone else. Dani goes insane at last minute and becomes the Big Bad, check. Everybody else's favourite characters live, check. The dragon
eats/melts the Iron Throne, check (I only got that one half-right.) Overall, it was fine enough. It was a pretty amusing Hollywood ending for what it was.
I'm more angry about fan-reactions and everyone telling me "it's the worst thing ever" in the weeks leading up to it. That does NOT psyche me up for watching a show. I actually took three days off between episodes 4 and 5 because everyone told me they should've stopped there. This is the first time I actually sought out spoilers just to know what horrible thing was around the corner... only to find out it was a happy ending that was driving them crazy. A happy ending isn't ideal for GOT, but when it comes to bad endings, a happy one is definitely more manageable than the alternatives.
Besides, I'm convinced that once all the books are finished, HBO is going to remake the series anyway, just to make it "closer to the books" and show us the real ending. There's a demand for it, people will watch it, HBO will do it. Something like a "Game of Thrones: Brotherhood" kind of deal (anime fans might know the reference). Or they might go back to season six and remake it from there, just to show us a "That's how it could have happened... but how about this?" ending. One where the Night King takes the Throne, because until Season 6, all my money was on winter coming.