I don't know how people can compare eating fast-food to using a social network. Is it really bad for you if you use a social network?
[0] http://www.bbc.com/future/story/20180104-is-social-media-bad...
[1] https://www.forbes.com/sites/alicegwalton/2017/06/30/a-run-d...
Most people don't post about the drudgery of every day life - work, kids, rinse repeat.
It's easy to think everyone else has a more exciting life than I have.
However, social networking can be used constructively, and doesn't necessarily need to be kept to a minimum in order to not be harmful.