There are some exceptions at times (like pickles), but for the most part, I hate the texture of crunchy vegetables. Particularly onions, broccoli, and cauliflower, but pretty much any veggie, is worse uncooked or undercooked imo. I hate most raw vegetables by themselves or in salads, but undercooked ones may be even worse because I was promised and expecting something cooked. Crunchy peppers or onions ruin a pizza as one example. Under-done carrots and potatoes in a curry, which I had yesterday, is another perfect example.

This may not be a universally unpopular opinion but I definitely feel like I've had a lot of people seem surprised by me not liking raw veggies.