“Facebook is therefore I am”

why do adults insist upon posting their lives to social media.  Why does CE get the impression (false or true) that most people who are active on Facebook lead unbelievably wonderful lives. Isn’t Facebook presenting a shallow narrow narcissistic view of the world? 

there are exceptions of course, check out beautifulself.org to see what happens in the “real world”.   

so what are the rest of us doing Tikkun Okam ( to repair the world )?