Some of my pet peeves are personal - i.e. werewolves, vampires etc. They are clearly very popular (tons of books with them out there) but very much not my thing.

I have no problem with pirates in erotica (especially if it's of more bdsm kind of stuff) but in a mainstream romance novel where one is portrayed as great husband material? Oh no.

I am Russian myself and no, no such thing as a historical vegetarian Russian. When you can't have meat, you have fish. If you can't have either, you put up with it, but you are certainly not going to be fluffy-bunny by choice.

I hate the Idiot Plot pet peeve. Too many books have them. Ugh.