>>281426625
Writing good endings is hard. You look at these series in hindsight as an outsider not as the people working on it. It's hard to quantify when a good ending or a bad ending is actually better for the work. Sometimes you write a series with an ending in mind and then a different ending is actually what lines up with what you wrote.

I will say a lot of my favorite endings are actually Japanese so they do it right a lot of times too.