[bobthechef]

That you can find bad eating habits doesn't disprove the notion that taste has something to do with nutrient content. Our senses are not distinct from our psyches. Why we might choose to eat in ways that are not good for us is not determined by the tongue alone, and even the capacity to taste can vary. (Of course, more than taste is engaged in determining what to eat. We select foods based on a variety of signs. We can be fooled, but just because a sign may be misinterpreted doesn't mean signs are irrelevant. It's not either/or.)

I've met people who dislike anything except chicken fingers. They dislike anything but a very restricted number of foods, often of mediocre quality. Why? I don't know. Maybe they were raised on mediocre diets. Maybe they suffer from rigidity. That doesn't mean I can't look at a two tomatoes and generally tell which one is likely more nutritious by tasting it.