If you think you even remotely need 4k on something the size of a gaming monitor then I'm willing to bet you're one of those spoiled brats who always goes on about having 120fps minimum or games are unplayable and needing stupidly priced audio systems.

Throwing every enthusiast under the bus all at once; really shows off you deep understanding of other peoples differing needs and priorities. Nothing wrong with a sound-system that cost in the hundreds of thousands of dollars, as long as the person buying it has the money. Nothing wrong with a computer for thousands of dollars either. When the bills are paid, food is on the table, and I'm healthy, what someone does with their money isn't being spoiled. It's enjoying life. If that means buying a $5000 computer screen, cool. If that means giving $5000 to a charity, cool. If that means eating at a fancy restaurant for $5000, cool.

I have a high-res monitor, 2560x1600, and I have had it for years.

I worked and saved for years to get it, and I sit about 60cm (2") away from it. It has 4 pixels per millimetre. Or about 100DPI. I can clearly see the pixels. I don't have super-human vision. My (old) phone has over 200DPI. My GF's phone has over 300DPI. 100DPI simply isn't enough. For anything print, 300DPI is the MINIMUM standard. For normal text on paper, it's over 600DPI, often a lot more. And don't try and tell me what the eye can and cannot see. You need a resolution of over 600MP to cover the full field of view of a human, if the head is stationary. That's a low estimate. If you want that in pixels, it's more than 24 000 x 24 000. That is the best estimate for a field of view area of 120 by 120 degrees. As I'm sure you know, the human vision is about 180 degrees horizontal, more if you include the side-vision.

It's not about being spoiled. It's about priorities. It's about knowledge.