I wish I could get rid of it myself, because it's an addictive waste of time—an endless round of virtual partying, where it's too easy to get stuck in arguments with tar-babies whose "knowledge" of the issues they pop off about is wholly based on propaganda they've picked up from Google searches. (Of course, some of them may not be actual human beings but state and/or corporate bots.)
On the other hand, I've made some excellent "friends" through Facebook, and pickup many stories that I'd never have discovered otherwise—stories that I share with all of you (and "you" now include scores I've "met" on Facebook).
But all of that's just me; and as Facebook continues gradually to shut down dissident expression, those few advantages are disappearing. In any case, here are some very good reasons to delete it.