I Understand That For Many This Might Be A Frustrating Ending; It Is Indeed Emotionally Incredibly Heavy,

I understand that for many this might be a frustrating ending; it is indeed emotionally incredibly heavy, and it’s normal to feel sadness or anger! I would say that in Game of Thrones there is an extreme level of brutality, whereas here it’s still not as prevalent, which is something to be thankful for. I wouldn’t agree that his death is entirely meaningless. Yes, he lost his battle for the Uruks. But thanks in part to his involvement, Galadriel gained a lot of understanding about her own behavior and found her inner light, and through this, Adar - at least for a while - felt like his old self, healed from Sauron’s influence. And for several centuries, he and his children lived free from Sauron’s influence, which is also important. So, in my opinion, globally, Adar did lose to Sauron, but the moments of clarity in his life are still significant and should not be forgotten.

Honestly, I haven't seen such a terrible story as Adar's in a long time. Not in the sense that it is poorly written, but in the sense that his storyline and his entire life are absolutely hopeless. His life was spent in suffering alongside Morgoth and Sauron; he witnessed how they killed and tormented his children, he was tortured too. For a brief moment, they freed themselves from Sauron's power, and Adar did everything to ensure that Uruks did not fall under his control again. He was ready to turn them against him, to feel their distance and their waning love for him, he was prepared for them to kill him, just so they wouldn’t become slaves again.

He dies right after realizing that the ring could heal him, after a new path opened up for him in alliance with Galadriel. Sauron looks at him and Adar understands that Sauron has won, and that everything that came before was in vain.

This is an absolute, total nightmare and shattering of all hopes.