I'm a software engineer. One monitor for vim, one monitor for the terminal, one monitor for the browser. Somewhere in there is chat, which is how I do most of my work communication. I have to keep a lot of information in front of me while I work so I benefit from more monitor space.
The distraction tends to come from my phone, or more generally when my company does something infuriating and I can't think straight for a while.
Can't think of any particular reason we need to replace the US population. It seems like we've done enough.