10-15 years ago, the internet was full of small independent communities: message boards, IRC channels, chat rooms of all kinds, etc. You could really "hang out" with the same people and get to know them.
But something killed pretty much all of them. Instead we have centralized "social media" that is at best all about narcissism and self-promotion. Sites like Reddit where there is too many people and everyone converges to a single "hive-mind", you cannot have someone reply to an interesting post you made years ago, and that really take the humanity out of the whole thing (like Facebook or Tinder or what not). Even HN is problematic in this regard - it is good for the purpose it exists for, but you cannot have any sort of casual threads or discussions just to get any sort of rapport within the community.
Even messengers have somehow become worse in this regard. Yahoo/MSN messengers, ICQ etc. were somehow all about having connections with online friends. Maybe it is just me, but there just doesn't seem to be an option that works for this as well nowadays. Or at least people do not seem to use the existing options in the same way.