**Yes, people do really want to look at multiple windows/monitors/screens at once.** For various reasons.


Working on a screen while monitoring something else,

 <img src="https://i.sstatic.net/2T23b.jpg" width="250"> <img src="https://i.sstatic.net/n9Eij.jpg" width="250">


security personnel monitoring multiple devices/networks/places,

<img src="https://i.sstatic.net/gFS12.jpg" width="250"> <img src="https://i.sstatic.net/UiPut.jpg" width="250"> 


stock trading,

<img src="https://i.sstatic.net/70OZI.jpg" width="300" alt="stck trading software">


flying an airplane (I guess a pilot needs the information available always, not through clicking and restoring windows from the background)

<img src="https://i.sstatic.net/9xJD5.jpg" width="300" alt="F-15 cockpit">


or just because you are the vice president of the USA.

<img src="https://i.sstatic.net/1vDh6.jpg" width="400" alt="Al Gore using 3 + 1 monitors">


  [1]: https://i.sstatic.net/70OZI.jpg
  [2]: https://i.sstatic.net/9xJD5.jpg