Anybody worth keeping in contact with, I have their phone number.

The only use for Facebook is for the marketplace.

Sadly for me, there's another use case for Facebook: special interest groups (as in niche groups for hobbies).

When the Great Migration away from phpbb forums and bulletin boards happened, lots of these groups moved to Facebook. I loathed it, but joining the migration was the only way of keeping up with stuff that interested me.

Now there's another Great Migration to Discord, which I won't follow. Real-time chat simply triggers my FOMO and is stressful to me. So any community that moves primarily to Discord will lose me as a member. I suppose nobody will miss me though.