I'm only a few years younger than you, and I also use Facebook a lot. But I only use groups, events and messenger.

It's impressive how bad their UI is for my use, though. It seems like Facebook is trying to be useless for important things, like community groups where you actually have to coordinate things, or events you actually want to show up to. Instead they're working really hard to always shove uninteresting algorithmic suggestions in your face at every turn.