Natasha's sacrifice was narratively satisfying, but not emotionally satisfying.

Steve's choice to live in the past was emotionally satisfying, but not narratively satisfying.

Oh, yes, I like the way you put that into words! And it explains why I keep saying to people, "Natasha's death made sense as the end of her story, and it was totally in character, but I hate it. She deserved better."

And, "I'm so happy for Steve that he gets a lifetime with Peggy, it warmed my heart and everything, but it doesn't make any sense for him to do that!"

Also agree on Tony. His story was done. It made me tremendously sad, but it felt right.