I think monitors are like headphones. Unless you actually try the "better" ones, you don't have a clue what you're missing. I know because I had been saying "Dual 1080p 24" is all I will ever need." for a long time until I got a 4K 50". Now I can't imagine going back.

I usually use a pair of Sennheiser HD280s that I've had for over a decade. I've used some fancier headphones costing more than an order of magnitude more, from brands such as ZMF. After experiencing the high-end advantage, I'm still perfectly happy with the 280s. There are a few things I care about in a monitor, and DPI is nowhere on the list. Every monitor commercially available has more resolution than I care about. My number one concern is consistency across a wide viewing angle. Low latency, retina DPI, gamut accuracy, HDR, curved surface? I don't care about any of them. I have tried all of them.

I checked with my wife and she is unsympathetic to this idea.