But even though people use many parts of Facebook less often, it's really hard to quit Facebook entirely because a lot of social activity revolves around it. In my circle, people tend to plan events using Facebook and often use Messenger to communicate. In university, people would ask questions in various FB groups. So while no one's really happy with Facebook, it still provides several conveniences that we don't want to live without.
Also, Instagram is still very popular - much of the activity that used to be on Facebook seems to have moved there.
there's not the level of interaction (and exposing one own opinion) that you'd see below a Facebook or Twitter post
Apart from that, when meeting people and continuing to meet them, I usually use the good old phone to communicate with them. The people I interact the most with on Facebook are at the same time mostly those I meet the least in the real world.
Shaving off an additional layer of complexity...
I also fear what FB and Zuck are capable of if they realise they're on a dead-end business model, and what abuses of personal data we might see as they attempt to cash out before everything dries up...