Comment by duiker101

I don't think it's as much a design for designers but a design for users. It's a guideline that all apps can follow so that the user doesn't have to relearn every single app and is more likely to know where to find stuff. As far as aesthetics go it's not the greatest yes, but it doesn't have to be. Having a good looking foundation on which to base your app is great. If you really want it can always be innovated. There's plenty of nice changes you can find in different apps and it's always evolving.