1. Obito's ending. I mean death, is not something that could be considered "happy ending" for any character, does it? Not taking anything that was shown after that, than it's same "techincal" happy ending as others, by canon, that Sakura got.
2. Again, dying isn't something that coudl be described as "happy ending" does it?
3. That's a hard part, because The Last is "canon" by Kishimoto's words. By manga - 2 last chapter is complete clusterkitten of whole story, and judgidng OOC characters are not a good idea.
You can't read, or smth?
1. and 2. So if a character dies they're not happy? Then every single character-except for Hidan-aren't happy because they will all die.
Tell me. What is your biggest reason for declaring a character isn't happy?
Is it because they died? Or is it because they said so? Or is it your subjective opinion?
Unless I understand the reason of your claim this debate will be meaningless.
3. If a movie contradicts the manga then it's natural to take the manga facts > movie.
Going by the manga facts, nobody got what they really wanted in the end.