As an 18 year old the only things Facebook is used for in my circle is:

1. Facebook Events for invites 2. Facebook Marketplace 3. Facebook Groups of interests 4. The occasional profile update or "on this day" post

With the news of the new Facebook dating service, it seems that Facebook is moving away from users reading a single feed and having separate parts for all functions. For sure, it is not used to share or read anything meaningful in my circle.