[Bullshituserid]

The biggest failing of the Mac OS UI is forcing all apps to share a single menu, which remains glued to the top of one screen. This effectively turns your entire monitor into a single window, and encourages developers to spawn a flotilla of floating child windows. Thus you can't minimize or resize the application's UI, because you're herding a bunch of independent windows around.

Not to mention the annoyance of rolling up to the menu and opening an item, only to find that it's not the menu for the app whose UI dominates the screen. If you "quit" Mail by dismissing its UI and revealing Xcode behind it, the menu bar is still owned by Mail. Goddamned stupid.

It also contributes to this asinine mania for keeping apps running, even though you've "closed" them. When I dismiss an application's UI, I want it GONE, not wasting resources.