May I ask your age?
You are obviously not older nor is your vision less than very good.
For us older folks, _less_ resolution "is more" -- because it's simply easier to see.
Not the person you questioned, but,
I'm 64 and have a pair of "Computer glasses" that focus at 24". I can use all the resolution I can get. I also feel that 1080P in a 27" display is grainy. I love my 27" iMac and 15" high-res MBP.
With my conventional bifocals, it's very difficult to see the display. Major case of eye strain!
Of course eye disease, at any age, will cause problems. In that case, frankly, Microsoft Windows is the way to go because of superior scaling abilities.