I strongly suspect that the majority -- maybe the vast majority -- of the data that is being retrieved by my web browser is not related to viewable content at all but is devoted to snazzy menu functions and, well, crap that I might not even choose to view. It like having the entire set of encyclopedias delivered to your door when you want to look up one simple thing. (Yeah... I remember encyclopedias.)
I would welcome eliminating the glitz and dancing bologna that litters most web pages today.