Well, the vast majority of the people consider 60hz totally acceptable for work - and work fine with it.
For the huge majority of the people refresh ration > 60hz isn't even a concern.
Better resolution on the other hand is a marked improvement (either as more screen real estate or as finer detail retina style).
But isn't that more for quick moving stuff, like games or (in the iPhone) quicker visual response to pen input and such?
For regular computing (reading webpages, editing stuff, programming, watching movies) I don't see much of a difference.
Heck, movies are 24p and we're fine with it.
Check out iPad Pro devices with 120 Hz display. It makes a big difference in readability of scrolling text (try to read a web page while it's scrolling), responsiveness and smoothness of motion.
If you're on a MacOS platform, with the current price of HiDPI IPS displays, the time is right to grab just about anything. If you're on Windows or Linux, it's still a great time so as long as you're keeping all monitors the same DPI and probably integer scale.