As someone who has dropped almost all social media (mostly so I can get more done, but also for privacy), I can point out some non obvious consequences. This blog post mentions that stopping the use of Facebook will prevent you from seeing your nephews baby pictures... This is true.
My extended family and remote friends actually got upset when I dropped Facebook. They asked why I didn't want to be part of their lives, asked why I was choosing not to talk to them anymore... All while texting me on phones that allow instantaneous communication of any type of election media imaginable, more so that Facebook allows.
Moral of the story: Facebook and other social media makes most people socially lazy with continuous use. If you don't believe me, go try to meet someone under the age of 30 "out in the wild", at a bar or venue. Bars used to be easiest places to meet anyone at, just walk in, sit at the front, and start chatting. I'm not talking about people who are on their phones ignoring the outside world; even people just chilling and having a beer just don't know how to talk to someone outside of their social media platforms.