Despite the fact that multiple monitors make you look like a serious computing badass, I sold my multiple monitor set up a couple years ago and switched to a single monitor. And I’m not alone.
I started having this feeling awhile back—I found myself using only the external monitor with my work MacBook Air and a single monitor with my home Mac mini—when it was used at all. Now, as most of my work is done on an iPad, at most I can split my display among two apps with a third playing video in the corner. I do have a Chromebit with display at my disposal, but even then it’s a single display, encouraging one to focus on the task at hand.