I really don't get why they are throwing away a nice, clean, smooth interface to embrace a new big "touchy" UI even on the browser and the desktop. I understan

I really don't get why they are throwing away a nice, clean, smooth interface to embrace a new big "touchy" UI even on the browser and the desktop. I understand it's important to implement a native App for smartphones and tablets, but I do not like at all the trend to transform the desktop UI with big buttons, huge padding everywhere etc. (GMail style).