To those with 2+ monitors on your machine: What's your use case, and how much does it actually boost your productivity?
I'm mainly curious about software developers here, or anyone else whose computer is somewhat central to their life, be it professional or hobbyist.
I only have two monitors—one directly in front of me, and another to the right of it, angled toward me. For web development, I keep my editor on the main screen, and anything auxiliary (be that a dev build, a video, StackOverflow, etc.) on the side screen.
I wouldn't mind a third monitor, and if I had one, I'd definitely use it for log/output, since currently it's a floating window that I shuffle around however necessary. It could be smaller than the other two, and I might even turn it vertical so I could split the screen between output and a terminal, configuring a AutoHotKey script to focus the terminal.
Main monitor: terminal with dev server, and browser to localhost
I wish I could have a small, third monitor for just the terminal but my Mac struggles with one extra monitor. I also tend to work at 150% zoom because of terrible eyesight, so I don't actually have that much screen real estate.
Virtual desktops, multi monitor and tmux allow me to go full ADHD, everything open at once, multiple projects on different desktops with like 5 windows open
Bonus points when I've got multiple terminals connected to the same tmux session because I forgot I already had it on another desktop or wanted it split with something else