Windows on the family shared computer, my daughter has a Cricut machine and we often need real Microsoft Office. Linux for my own desktop and laptop.
Debian, since like 20 years now.
Main workstation is a desktop I built myself last summer. I call it my little Intel space heater.
1 monitor but with PBP (picture by picture) enabled, so it behaves like 2 monitors side-by-side. With awesomewm this gives me 10 workspaces on each half of the monitor and I can still resize a window to fill the entire screen as needed without a seam down the middle.