For years I worked on a single 16" laptop screen, because I was constantly on the move. It was fine. Then the pandemic started and I was stuck at home, so I started using an external 27" monitor instead (single monitor) and then I picked up a second 32" monitor.

Now I use 9 desktops across two screens, and it's a lot better. I'm much more productive when I can see everything at once.

I suspect I'll readapt to a single screen as travel picks up again, but I really do enjoy my two big screens.