But the difference is not 'killer features". The difference is in the million small details and polish. The integrations, formats, UI, workflow, things it just "gets right" that I don't even know its doing.

I try Libre Office every once in a while. But each time I try it just feels old and clunky. It's all in the tiny details that add up to the overall experience.

Clearly you're not missing anything since you're happy with what you have. But going from Office to LibreOffice is painful. Not bullet-wound painful, more like thousand-paper-cuts painful.