Been waiting and looking forward to 8k. It would make a significant difference for me.

I use a UHD/4k 40" TV as a monitor, running at native resolution. It's essentially four 1080p 20" screens in one. The pixel density is pretty good, but not "retina"/high DPI level.

Things can be a bit too small as I sit further from the screen than a regular monitor.

With 8k, it'll be four 4k 20" screens in one.

I'd be able to go to a larger screen without sacrificing much on pixel density. I would no longer have to zoom in on certain websites and can just get a larger screen.