At the distance I look at my TV screen (about 7 feet from the couch) I can't make out the pixels of the 1080p screen. 4k is lost on me. 2020 vision but I guess that is not enough.

Resolution is much less important for video than it is for text and user interfaces.

This is exactly why I went to 4K.

Used to have a 27" 2560x1440 monitor at home. Got a 4K 27" at work, and when I got home, the difference was big enough that I (eventually) decided to upgrade the home monitor.

Unless the screen is right in front of your face, video codecs and their parameters matter more than FHD vs UHD, IMO.

At least to me, with corrected vision, a high quality 1080p video looks better than streaming quality 4k at the same distance.

Compare apples to apples, e.g. gaming, and the difference is glaring.

I’m 3m from my TV and I can absolutely tell 4K from 1080p, but it is indeed subtle.

But a fraction of that distance to my monitor makes even 4K barely good enough. I’d need a much smaller 4K monitor to not notice pixels.

I also have perfect vision in terms of focal length - but it turns out I have astigmatism in opposite axises in both eyes.

Glasses make a huge difference when watching TV, and are the dividing line between being able to tell the difference between 4K and 1080p and not being able to discern any.