At the same time they don't utilize the 4 most easy to reach points of the screen, the corners. Windows always used those for essential interactions so the interface was really fast to use: for the start menu just throw your mouse to the bottom left corner; to close the window throw your mouse to the top right corner; to show your desktop throw to to bottom right; not sure anymore about the other corner as I am on Mac for a while already. Since switching to Mac I am always thinking about how stupid the interface is for disregarding important user-friendly details like these.