I rarely like them because they are done poorly more often than they are done well.
I don't have the knowledge to be as picky as Saria, but I basically just detest poorly made food. I'm not a fan of grease, and often find even expensive restaurants rely on fat instead of quality ingredients and preparation. It just tastes repulsive to me.
I'm not afraid of fat or sugar where they belong, but people overdo it to make up for lack of seasoning or skill. I claim to hate fried foods, but in reality I hate poorly fried foods. Fresh, crispy, not oozing grease? Yum!
I don't care if it's simple diner food or fancy and super expensive - I care if it's well done.
As for my quirks - I also don't like my food touching. If foods are mixed together as part of a dish, that's fine. They are intended to touch! But if they are two separate items, they are intended to be tasted separately, not together. I want to taste the flavor of each alone.
In some cases foods taste better mixed than alone, of course, but I still want to taste them separately if they are served as separate items.