Because I’m on a Mac, everything will be rendered at 2x resolution, giving me the same usable area as a 1920x1080 display, even though the physical area is larger. That’s a step backwards—I’m not willing compromise on usable area or 2x resolution, so a 4K display isn’t good enough.
(Edit: my Cinema Display is something like 15 years old, so I’m confident I’ll get my money’s worth out of a new purchase.)
