Not an FB shill but it has helped me reconnect with family overseas that I haven't contacted in 10 years or so (left as a child). So I am grateful for that, but I have not actively participated in the platform in general since 2012 or so) mostly because I noticed how cringe I was. I use their video chat platform to talk with them once a week.
Some more context, they're not native English speakers, live in a small dirt-village but somehow many people there have a mobile phone and FB so they found me/added me.