Our tastes change over time. Not to mention growing children need sugar. Veggies aren't that high in sugar compared to fruit.
I was happily eating my lettuces though when I was young... and also fruits. I loved fruits. I hated pineapples though with a vengeance. It was only now that I am getting past adolescence that I grew a liking to pineapples.
When I was young, I liked lechon paksiw and humba, meat food with lots of taste... Now, I hated them with vengeance!
I like broccoli to some extent no matter how they are cooked. They are crunchy and feels good to the mouth.