Its more a texture and taste thing, than an arbitrary classification. I love most fruit, for instance, but tomatoes turn my insides to outsides, there is an exotic fruit I once tried, horned melon, tastes exactly like tomato; right down to the smell of it, and I just cannot bear the things. Bought one once, not knowing a damn thing about it, figured I'd try something new, but once I actually came to eating it, my gorge rose and I had to hold on and try not to chuck my lunch as to my disgust it was more or less one great big buggering tomato with a stinker of a price tag on it.