Shaun Ryder of the Happy Mondays is adamant about not eating tomatoes. Somebody asked him why once in an interview, and he said it's because he grew up next to a sewage yard. Get this -- the human body does not digest tomato seeds, so the seeds would sprout amongst the human waste and the landfill was always covered in tomato plants. He said that it was quite beautiful, but he's never been able to eat tomatoes because he associates it with, well, feces.
That turned me off from tomatoes for a while, but not for too long. I'm Italian and my family has a hard enough time with my being a vegetarian, they'd disown me if I gave up tomatoes. But I am always surprised at the amount of people I run across who won't eat them. And they're always ADAMANT about it.