I can certainly see the difference between low- and hi-DPI, but thanks to subpixel rendering (which unfortunately is going out of style because of hi-DPI displays), it doesn't really bother me - call me old-fashioned, but I'm more bothered by the waste of pixels. 2560x1440 is a pretty good resolution for a monitor, and nowadays it's crammed into the 5" display of a phone, just so that it looks pretty. Ok, unless you use it for VR, then even more DPI would be nice...