I deactivated my Facebook account several years ago. Since I manage many client pages, I ended up creating a second account solely for that. Then last year deleted my personal account for good. This month I also decided to delete my Instagram account as well.
It's probably easy to say that I've replaced some or all of the time I spent on those two networks with Twitter, Reddit, Slack, YouTube, RSS, or Cake.
Leaving Facebook, at that time, was more about how I felt about myself and how I spent my time and less about data privacy. Certainly now, all those factors should be closely considered.