2560x1440 is good for me but if I were always running less demanding apps I'd consider 4K.
I'm in the same boat, 1440p is plenty good for me. 4k would also be nice. But: It wouldn't fit on my desk! In my opinion (and it's just mine) if you can't see individual pixels or rather the pixel grid with your reading glasses the resolution is tight enough and this 32" screen requires a magnifying glass for me to see the grid. Or having two pairs of reading glasses on top of each other, +1.5 and +1.0 combined show a faint hint of the grid. Thus 4k wouldn't make much difference in this size, I should go up to some 40" to get the most of the better image quality. Less would be pearls to pigs.