From an incredible first season that did the books justice, to a final season that seemed to be actively working against every major storyline and character arc set up so far, there is no doubt the Game of Thrones' finale was not the Show That Was Promised, but that doesn't mean it's not worth recommending. Despite the devastating ending, the show was a cultural touchstone for the better part of a decade, and it's worth watching if only to understand the references. It's also worth considering that most of the seasons were excellent - and if you think 3/4 of a show was solid, isn't that still worth watching? If a quarter of a show's episodes were bad, but were spread out over the seasons, instead of being concentrated at the end, there would be no question that the show was still a good one to recommend.