Just because iOS is soothing and friendly and easy to use for the last generation not to be educated in problem-solving complex systems from their earliest walking moments[1] doesn't mean in any way shape or form that it is a superior interface. In fact in many ways iOS is very inefficient, and its popularity stifles real progress in computer interfaces. So we should be happy that a new interface model, that challenges people's expectations a little, is emerging.
[1] Videogames section in: http://www.amazon.com/Everything-Bad-Good-You-Actually/dp/15...