I'm definitely the type of user who doesn't like to spend too much time arranging things, especially windows/screens. I will change font sizing and color to suit, but otherwise I'm fine with the defaults.
Had a 2 monitor set up around 2009 on Linux, didn't offer any benefits right then. My budget was limited so 2nd monitor was 2nd hand and small.
After writing this, I'm surprised that ability to move windows between monitors is important, as are desk scale ergonomics. Overall monitor volume seems important.
At work, I still use 3 displays, not so much for multitasking, but one is for work, a second is for at-a-glance status board, and the third is for a browser window with some sort of documentation on it, along with my daily notes in Obsidian.
I'm typically not moving windows around, and I use different virtual desktops for different apps. My standard work desktop is a browser window and either vscode or a couple of terminals.
Other than that, all my active work is on a single monitor.
I switched to a single 4K 43" monitor (Dell U4320Q). I consider it the best thing I've ever bought. Paired with a window organizer (Moon) and virtual desktops, it is a very flexible setup, and also simple (no more dragging windows across monitors, no more dealing with window reshuffling when unplugging the laptop).
How are you setting your elbow with correct angle and have the right eye level with the screen?
1- https://www.viewsonic.com/library/business/best-computer-scr...
I used multiple monitors in the past, but the seams between displays was a hinderance when spanning a single window across.
When I travel I work on my laptop screen and it's fine but I prefer my desk setup.
Besides that, the macos workspaces fit my needs. Knowing shortcuts is essential though