Buzzfeed's FWD has put together a Facebook timeline filled with people getting VERY VERY ANGRY about each and every tweak to Facebook's design and functionality. Everyone hates everything that Facebook does, and always has, apparently.
Some of Facebook's changes have been for the better, some have been awful. But when your user base is as gigantic as Facebook's, even a small percentage of unhappy users is going to be pretty loud. Of course, that doesn't account for stats like 79 percent of users wanting the option to opt out of the (actually decent) Timeline.