How can anyone dislike fish? There are so many different varieties of fish. Also, how can anyone hate bell peppers? Bell peppers are so inoffensive. I love haggis, but I see how people could dislike it. I also agree with lamb, (even though I love it, too), I know it isn't that popular in North America.
Of course there is a distinction between food we hate, and food that has been badly cooked by someone who is completely clueless.
The only food I hate is cilantro, because to me it tastes like soap. Interestingly this is not an uncommon phenomenon for many people who try cilantro. I probably also wouldn't eat bugs. I can't say I hate bugs as food, I have never tried them, but my mind can't get around eating them. Third, I would have to say I couldn't eat anything that was alive (except things like mussels) on my plate. I have seen some videos on youtube where people in Asian countries eat live frogs that are still alive and looking up at them from their plate. That is just disgusting.
So: 1: Cilantro; 2: Bugs; 3: Animals that are eaten while they are still alive.