Sure you’re not a gamer, but have you tried using a 120hz/240hz monitor for a week? I think you’ll find that it’s almost as massive an upgrade as going from 1080p to 4K.
Going back to 60hz is painful. You’ll see the cursor moving in a rotating square pattern when you’re moving your mouse in a circle. The lag is palpable.
I've been using a 144Hz screen for two years, I am a gamer, and I'll be honest: I don't notice much difference between consistent 60Hz and 144Hz. And I'm fairly sensitive to frame rate - when I'm watching a movie at someone else's house, I can tell in seconds they have the garbage "smoothing" or whatever features enabled.
Things that do stand out to me are input lag (again, usually only from TV-as-monitor with bad settings), bad colour space, and occasionally bad grey-to-grey time. I would take a 60Hz monitor over a 144Hz one if it meant avoiding any one of these issues. In a heartbeat.
Going back to 60hz is painful. You’ll see the cursor moving in a rotating square pattern when you’re moving your mouse in a circle. The lag is palpable.
> What else is there?
Well HDR is nice to have.