As for odd things in operating systems, why do some make it so hard to figure out how to reboot or shut down? Windows 8 buried it, and for the life of me I never even found it on Fedora when using a live CD. I just held the power button down.
Poweroff was hidden in GS until 3.6. To make it show up go to the user menu and hild down alt. It changes suspend to power off.