People are calling the move from 3D Icons / Interfaces and Skeuomorphism to flatter designs a "leap forward". I guarantee if Apple and other companies started with flat designs and went to 3D that everyone would be saying "this is amazing! the 3D icons look so good!" I think people are just tired of the same look and are welcoming any new change whatever it may be. I think the skeuomorphism when done right looks really good. I think it's the lack of consistency that I don't like. All of Apple's apps are so different. So it should be nice to have the same look/feel across the apps.