You often have a particular example in mind, but without taking up pages to explain it, the meaning it gives to your post doesn't always carry the same weight.
Exactly. And I'm afraid that kind of thing happens in rl, too ;)

I've been in fandom for over 20 years,
That's a little longer than me (I'm only 28). My first "real" fandom was NCIS, then SPN. I love other shows/movies, too, but I'm kinda averse to join another fandom. Dealing with two or three at the same time is enough for me...

I think there are a lot of excerpts online that get the idea across.
Yep, there are excerpts. I'll have a look at them :)