Someone said :
hmm are you sure you know the meaning of literally? as if I am even the only person who disagrees with your assumption then it is not "literally everyone"
Yeay!, nothing opens up fresh, lively opinion, and free flowing argument than semantics, rhetorical nit picking and the investigation of credulity.
(apologies if this has broken any sarcasm detectors within 100 meters of your monitor.)
Why don't we just say ye disagree?
I reckon people use facebook for different reason and through the viewpoint with which they see the world.
I use my avatar to either show people my face (so they know it's me/know what I look like) or the odd time, to display a funny photo of myself relevant to a recent event involving my friends, family or personal life.