My sister in law only eats corn and potatoes as vegetable too! Not even salads. She had two very healthy babies (one a veggie hater, one a veggie lover) I know several corn and potato eaters!haha They're both pictures of health. So weird. I eat anything green and little meat.
I've come to the conclusion that all people are just made different. What may be fuel to me doesn't work for another. Your makeup just may not require greens like some people do. I think that if something doesn't taste right to you, there's a reason for it, and for whatever reason that is, you don't need it.
I used to get picked apart for not eating meat or dairy. I would spit it out, tasted disgusting. I would be told, I'd be unhealthy whatever. Anytime I'd even get the sniffles my stepmom would blame it on not eating right!

Turns out 15 years later I was diagnosed with a rare disease and told I'd have to have a basically no meat diet the rest of my life. No butter or cheese, no animal fat, alot of soy and three times the amount of fish omegas and oils from olives and nuts than the average diet. My body already knew that for years!