I am the unpickiest eater ever. There are things I won't eat often, like fish, and things I've never had but would try, like snails, but nothing on that list that I wouldn't eat.
Probably the closest thing I have to a 'no' on there is white chocolate and I'm sure I could find some kind of dessert with white chocolate that I'd like.
I avoid pig meat because I'm creeped out by how similar pigs are to dogs, but if I'm a guest at someone's house and they served pork chops, I wouldn't make a scene over it.