Tastes differ between people. I eat burgers and hotdogs because they're tasty, and their tastiness for me is inversely proportional to the amount of vegetables you put into them. I rarely eat out, but if I want to grab a hotdog, I only do so in places where I can get a bun, sausage, ketchup and mustard, and exactly zero of all the other dressings.
And from my POV, vegetables and fruits tend to ruin the taste of everything. I just don't like them, period. I accept some in appropriate context - common mushrooms, onions and peppers when the food is salty, carrots and apples and maaaaybe tomatoes on the sweet end.
I can't tell you why I am like this, though I am very curious about what shapes one's tastes. I eat plenty of healthy stuff, but I'd love to make myself somehow like it, - all I've managed so far is to not feel completely miserable every time I eat a healthy meal.