I think it came along with the concept of "teenager", so less than two hundred years old.
There were the Blues and Greens in Byzantium but that was more like fanatical soccer hooliganism.
@ZachWeinersmith
Well, there is that whole fairly strange fanboyism that happened and got bound up in that collection of work, republished together...starts with a B...I feel like you did an abridged version at some point?
Seriously though, I'm pretty sure it's just a new form of an old thing, but we tend not to think of people imitating chaucer as fanboys (they absolutely were). It's easier to suddenly do it and possibly make money off it than it used to be (narrow focused is algo-friendly).
@ZachWeinersmith Old wine in new, intoxicant-delivery-optimized casks. Oh and the wine is now also iteratively optimized for maximal addictiveness.
Basically one of those 'quantity has a quality all its own' scenarios.
@ZachWeinersmith My opinion: once you realize that "bible fandom" is a thing, it becomes clear that people have spent millennia with lives and identities centered around their fandom.
That said, non-biblical fandom does seem more visible now than 10-20 years ago, possibly because the kids of well-marketed media have grown up into disposable income. (And social media widening the pool of what's visible.)
@BenCKinney
@ZachWeinersmith Books like Paradise Lost are just fan fiction.
Fan fiction in this sense is an ancient tradition; it's the media franchises owned by corporations are a new trend.
Musical genres used to be all-encompassing identities. The music you listened to meant a lot about who you were, what you cared about, how you dressed, etc.
I don't think music is like that anymore. People just listen to music, whatever. People are more genre-promiscuous.
I think the difference is how music is consumed now. The Algorithm, not the person, chooses.
All that sense of belonging had to go somewhere, so people get into other fandoms instead.
@ZachWeinersmith I think parasociality has gotten a push from social media specifically. Like this: you're a webcomics guy I read and have seen at a couple events. Now I can reply to a thing you said and maybe you'll see it.
There's lots of fandom without parasociality. You can be a fan of Apocalypse Now who cares if Martin Sheen was losing his mind during filming or an equally big fan who doesn't care.
The internet, I think, boosted parasociality untethered from other accomplishments.