Your passive-aggressive comment doesn’t deserve a response, but I’ll bite.

You see the desktop picture when you walk up to the Mac to unlock it, or immediately after you lock it before walking away. Or momentarily when you use Exposé or move windows out of the way to access files on the desktop.

Or if you are running multiple monitors, it’s common to clear out a side monitor or half of one for a new window/different app.

And I have more windows open than a Microsoft test lab.