I justify expensive displays because I sit at my desk 12-16hours a day 6.5 days a week. I usually buy a top of the line display (or array of displays) every 3-5 years. The difference between a great flat panel and a good flat panel is huge on the picture it outputs. However, this translates to marginal productivity gains. The 1000R curve is much better ergonomically, it means a much smaller head/eye movement to focus on different parts of the display. The 120hz display, especially with moving text, reduces my eye strain. Display lag, image settings, color quality, and HDR are big for gaming. The KVM switch can be good productivity, depending on your situation.
Yeah, that's why I was asking; I work from home 3 days a week, and do other work at my desk the remaining days, so I could pretty easily justify something better. I would very much like a 120hz refresh rate, because that's really the only thing in fancier displays that I think I'd actually notice; I appear to not be nearly as sensitive to "darker blacks" and "brighter whites" as other people, at least in my limited friend group, but I definitely do see a difference in a higher refresh rate.
