I’ve been using one computer screen as long as I remember. In fact, I didn’t even realize that you could have 2 monitors until I saw this happening some years ago.
At one point I tried doing stuff with 2 monitors. The end result was that I didn’t like it. To me, the gap between monitors is irritating. Therefore I simply like using a solid one monitor. Large screen enuf and good resolution enuf to handle several windows in my view.
How you like to work? With one monitor. Two? Or perhaps even more?