This article perfectly explains why large social media sites (Facebook, Twitter, Reddit) are trash.

What you’ll get is a place where everyone is a stranger, where being a jerk is the norm, where there is no sense of belonging, where civility and arguing in good faith is irrelevant because you’re not talking to someone, you’re performing in front of an audience to make the number next to your comment go up so you can briefly feel something that almost resembles belonging and shared values.