Hey you found a nerve of mine! I can't imagine whoever this person is, that you would ever get a reasonable answer to a question. I imagine them saying they don't eat any sort of sandwich (turkey, PBJ, egg/cheese) because one type has wheat bread or some idiotic thing like that.
People are just freaking either incapable of critical thought, or they're so emotionally unintelligent they can't break down their decision making process down into anything that's communicable and it's frustrating as hell for the rest of us. :(