For me it is not recording credentials with the assumption I would simply remember them later, while having every opportunity to archive them before eventually forgetting. Also, not keeping detailed enough notes & photos of exactly how my hardware is attached.
Sure, some of the effects are basically useless eye candy, but the 3D Cube thing is a non-intrusive, yet very intuitive way of switching desktops. The 3D Cube doesn’t even activate until you use a hotkey combination plus the mouse. It’s almost like having a virtual KVM switch if you’re running virtual machines.
To each their own, but you might actually like the 3D Cube and possibly some other Compiz features once you see how they work and what they offer…
https://youtube.com/watch?v=W8UKuDidNQg