Although I've made a small amount of peace with them, I don't like the headers so common in fan fiction. I despise ratings and I really hate warnings. I don't mind author's notes if they're more or less the kind of thing that might be on a book jacket, and I love acknowledgments, which are also commonly found on books.
There are lots of things I won't read, like death!fic, and many things that make me want to gouge out my eyes with a spoon, like MPREG, and yet, I hate warnings. If a book has difficult themes, no one puts a warning on it. It's either hinted at on the book jacket, revealed in reviews, or someone who read it tells you.
It feels like infantilism and spoon-feeding. And I'm a hugely triggered person on some issues, particularly rape, child abuse, and anything even remotely scary or dealing with the supernatural, particularly vampires.
Then again, I'm not really a fandom person. Queer as Folk is the only fandom I've ever played in online, and many of these conventions have arisen out of a collective fandom consciousness I'm only on the most outer faded-out fringes of.
But I simply don't want to categorize or tag or annotate my fiction with anything different than what might appear on the cover of a book. I've lost my shit when my fic, entered in festivals/carnivals/etc has been tagged by the mods with things like "femmeslash" or "slash" or "m/m" or "f/f" or whatever. They're stories. Shit happens in them. They're more or less about this, and it's thanks to so and so it was written.
I just don't care for all this WARNING and EXPLAINING and TAGGING and CATEGORIZING.
Grrrrr.