Yes. Our small town used to mail a newsletter about events, garbage collection, meetings, etc. That is now the town FB page. Church, Boy Scout troop, VFW, etc. use FB instead of paper mail. For us, it is more than entertainment.
Sadly, it's also displacing legacy forums such as this very one. I don't know how to stop it other than embrace it and continue to patronize the legacy ones I care about, hate that we're putting all our eggs in one basket but I definitely understand the draw...