Something I think a lot about is that, in my home, all my displays are 1080p or below, other than my cell phone which is 4K (but even that, I just set it to 1080p because 4K on a phone creates scaling nightmares).
Do you have any use for displays that are 1440p and above (including televisions)? Or are you happy with 1080p (or even 720 or 480)? What use does having a high res display provide for you? I’m curious what people think on this topic.
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Larger screens offer more real estate for windows and displays - more information side-by-side. Unless the resolution increases proportionally with the display size, things start to become fuzzy, blocky and unpleasant to look at.
Sure - you can use a large display with a lower resolution, and it will work, in much the same way that a book without kerning is readable, but it’s not as pleasant as it could be.
I cringe when I see people at work plugging their laptop in to a monitor and leaving the aspect ratio and resolution matching the laptop screen, despite both being devices being entirely different sizes, shapes and native resolutions.
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This was my favorite set-up for a while 
(eGPU details); 55" 4K@60Hz
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I can see the jagged edges of the pixels for text on 1920x1080 screen.
With 4k screen I see smooth text that is easier to read.
My desktop has a 32” 4k HDR dell monitor with scale set to 125% that has lots of spaces for windows and text looks great.
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4K monitors are brilliant!
Instead of getting glasses, I got a big screen and it helped!
The resolution means I can’t see the pixels in letters, and makes for a much smoother reading experience. (Strange huh, need glasses, but can see pixels 
)
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That biiiig 55" display must be a dream for gaming or watching media on… It’s like a powerful personal theater, haha!
I definitely can see why you’d want 4K on a display that big. For me, the biggest displays in my home are only 32". Not much has changed around me since 2010 lol
During COVID lockdown, I used a 32" 720p display (it’s pretty old) but the weird thing is that it happily accepts 1080p output. In hindsight, this explains why, no matter what I did, everything looked super blurry. It was crushing down a 1080p output to work with a 720p display.
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When you get older and need reading glasses for computer or reading uses, they will 99% of the time have a positive (magnifying) power. So you go from seeing so-so to 1) moving in closer because it’s comfortable again, 2) seeing clearer, and 3) the screen is magnified. So maybe with uncorrected vision it used to be fine, 1920x1080 on a 24” screen is now suddenly very pixellated. Especially if you get real prescription glasses that also correct for things like marginal astigmatism, anti-reflection coatings, and use quality optics at the correct pupillary distance.
On my desktop I have three screens at 4K set to 100%. On my laptop (a Dell XPS 17 9700) the 4K screen is run at 100% at 2560x1600 (16:10). It looks slightly better if run at the native 4K and scaled, but this causes endless headaches with software that doesn’t know how to scale itself. And it’s just borderline pixellated.
For anyone who can’t see the difference I’d suggest an eye exam and a pair of distance glasses. You’ll be amazed at the difference between seeing just fine and being able to read a newspaper header from across a large room. Then get a set of Rx computer glasses - suddenly those fonts you use will look huge, 1080p highly pixellated; switch to a finer pixel pitch and get a ton of working real estate!
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