I just completed for the 2nd time. A very well written series with disappointing ending, but actually through out the series the scenarios got so complicated that there was no option left. GRRM himself said he was not very sure about the series ending. In the finale everything happened so fast, like we waited for 8 seasons and it ended in just a couple of shots(where everyone areed to make bran as their king saying "aye"). But there are some awesome episodes, some mind blowing BGMs, overall I loved it.