Honestly, I don't miss most of it. Maybe it's just being jaded, but fandom discussion is just dead to me. My patience and appetite for listening to nerds complain about the things they claim to enjoy is just nil. just don't have the emotional energy to process it anymore.
Like, do I try and explain why I like Earthrise Arcee despite the flaws or do I add another paragraph to my novel?
It's kind of a no-brainer.
I do miss the people though. There's a lot of people I've not interacted with in a while that I miss talking to, but it's just a matter of not having as much time for online stuff.