I have mac user walking around in the office and asking me what kind of a desktop environment is it, being genuinely (positively) surprised that it is actually GNOME desktop on Linux. Well. And I have other Linux desktop users (like Xfce or something even more 'geeky', even TWM) that are genuinely surprise that I can just plug in another display and have it work without touching the command line (not that I can't use CLI xrandr, but why would I).