It's funny you mention this, I got a Commodore 64 Ultimate the other day and one of the first things I did was load up the BBS client and browse some BBSes. Those are from before my time (my first PC was a Compaq Pentium 166) so I never got to experience them for real. But if the rest of the internet collapses under the weight of bot traffic, BBSes are quite nice.
BBSs have been in theory replaced, but in reality they haven't even been approached by modern social media. Small forums full of dedicated users, often local. So many great memories.