I also have a 43” 4K, which I still refer to as “comically large”. I very nearly decided it was a mistake, until I set it as low as I could on my desk. Even so, as a computer display I get more out of the vertical space than horizontal (and tend to ignore at least a third of the screen while at my desk). If it didn’t also serve as my TV, I’d probably be just as happy with a smaller screen in vertical orientation.