+1, but I strongly disagree with you. I learn that: my friends have dragged themselves out of bed to enjoy some new and fascinating experience; after a long and severe effort, they have succeeded at their dissertation/weight loss/exercise program; that after a lot of duds on OKCupid, they have met somebody amazing; etc. There's plenty of surface-level stuff on FB too, but whenever FB has made me "miserable" it has always been over something important and meaningful.

A lot of things strike me as vastly more surface-level and un-holistic: what kind of car you drive, how big your house is, how rich your neighbors are, how immaculate your lawn is, etc.