Economists study what happens when people stop using Facebook
I totally quit television about a year ago, and it had a very noticeable positive impact on me.
I also mostly quit Facebook with the end of last year.  I say mostly, because I still use its event calendar, and occasionally check my stream.  But I significantly reduced the amount of comments I leave on that platform.I feel like, while the criticism of FaceBook, Twitter, Reddit and co is pretty much warranted, we managed to push aside the biggest time sink we already have since the 60s.
TV, and Netflix, for that matter, is wasting our time since many many years.