Where would you place SCA? They're kind of like LARPers but not really. I'm one hell of a history buff but SCAers kind of weird me out. I got cornered by one when she spotted some duplicate historical biographies I was selling at a garage sale. She started speaking to me in stilted Old English and invited me to some SCA function. I got out of the situation. SCA people just take themselves
wayyyyyy too seriously. (If you don't believe me, look up your regional SCA website. The
Kings and Queens accept gifts of juice and doritos. Really.)
I also avoid RenFaires like the plague. (no pun intended) Have you noticed there are very few people who think they're reincarnated from peasants? Everyone was Queen Elizabeth I or Mary Queen of Scots or whoever else wore a big, fancy outfit.
I used to know a guy who was obsessed with Piers Anthony books and actually thought he was an ogre. He even spoke, irl, as he thought an ogre would. All the time. It didn't turn off.
Also, I always have a mental division between fanfic and
erotic fanfic. Because erotic fanfic can get pretty weird.