Microsoft Windows is the Yugo of operating systems.
I would have gone with "the nine-cc Moped of Operating Systems", but having been forced to work on USSR-engineered projects I decided to refrain this once.
Then again, I resolutely stay away from the Atari 2400 systems of the computer world (*cough*-MACS-*cough*) so I am thankful that there are other solutions available. *grin*