In the *nix world, I cut my teeth on the GNOME and KDE desktop, as used in RedHat 6.1.
Unity on the current GNOME desktop is not particularly intuitive...it’s more tablet-oriented, IMO, than even Windows 8 Metro!
At least you can return to Windows Explorer simply by pressing ALT-TAB.
I put the Xen hypervisor on it so I can run a Win7 VM for Windows tasks.
At one point I brought up a VM with Ubuntu Unity desktop, did the install, booted, and there was no Terminal app on the desktop. No little terminal icon, nothing. And no clear way to put one there from what they did give you.
I was floored, totally flummoxed -- A Linux machine without a shell window. No xterm, no Terminal app. I freaked. I had to google to find out the keyboard shortcut.
CTRL-ALT-T ??? To get a damn shell on a *nix box?
That was the end of my experience with Unity. I couldn't even bring myself to mouse around to find the damn System->Shutdown dropdown menu item.
I typed "shutdown -h now" into that godforsaken terminal window, and 10 seconds later deleted the VM from my system. I have work to do.