Yes! Even closing the windows of programs that users no longer need is hard.

It's easy to develop a disconnect with the level that average users operate at when understanding computers deeply is part of the job. I've definitely developed it myself to some extent, but I have occasional moments where my perspective is getting grounded again.

It's a while since I've used Windows but I seem to remember it giving a choice of sleep, logout, switch session etc. I could totally see someone wanting a single button for it.