I personally think X and VIII had completely disappointing endings. I hate those games, but I think their fans deserved endings that didn't require so much research to understand. The open-ended-ness and open-for-interpretation, and finding out your main character is just a figment of your imagination. Garbage. I love a good mind-smurf, and interpretive storytelling. But these didn't seem like good examples to me

I'm actually sitting here thinking about all the endings to my favorite games; Fable, KotOR 1 and 2, Mass Effect games, Xenogears, Dragon Age games, and Shining Force; and I remember how they all left me wanting. They didn't make me change my mind on these games, and for the most parts the endings were really good, just usually took some weird turn that wasn't necessary and didn't help tie things up as nicely (one has your protagonist randomly running off to the edges of the galaxy to supposedly defend against unknown threats without getting to enjoy any of the peace you just spent 60 hours fighting for)

Its probably ridiculously cliche to pick a Final Fantasy in a Final Fantasy forum, but I really think VI probably had one of the best endings in RPG culture. There was closure pretty much EVERYWHERE, and everything got tied up so nicely. It gave me the feels and I loved it. Only disappointing thing was simply the fact that I wanted the game to go on longer and forever, but I didn't have issue with any of the choices they made, like I did (even to small degrees) with all my other favorite games