I lasted almost a year off FB once
TBH it was mostly great, but then I went on holiday & discovered that every taverna on the island had a Facebook page instead of a proper website
I'm all for principles, but not if it means missing out on a meal
Just on a handful of groups now, try & limit my friends to people I've actually met & unfollow or block the ones spouting crap (or posting unwanted shit on my page)