But, here is the one weird trick: If you think something is good, do it. But, if you make up your mind that it's bad, stop doing it. Following that rule would have kept a lot of people off these services.
To my knowledge, nothing people say about social media today is fundamentally different than what they were saying in 2008: it destroys privacy, it destroys discourse, it consumes attention, and it puts control over your life into the hands of corporations. And people recognize this: I can't even count the number of times I've heard someone say (or write) "social media sucks" and then kept right on with it. My only advice is, if you feel like something is bad for you, don't do it.