I think people actually do find social networks, and apps that support them, to be deeply useful and in high demand. The problem is almost every social network app, or website, is really just a massive spynet trying to capture as much personal information and data as possible to sell.

The social network part is really really simple. The early form of Facebook was remarkably effective, simple, and useful. The same goes for Instagram and MySpace. The business side, however, has poisoned that original creation into a profoundly corrosive "content delivery system" and a spy network that hides behind a fancy profile page and algorithmically (read: business interest determined) "feed".

Specifically, entertainment.