Although it's easier, drinking fruit and vegetables is not as much fun as eating them.
I watched my sister peel some oranges for the fancy-blender and it occurred to me that it just isn't a decent reward for the effort. I like the way some fruits feel in my mouth, like strawberries, and eating a banana or orange is happiness. Drinking them is less satisfying, maybe because it is too easy. The smoothie tastes nice, but it's not the same as eating the fruit and vegetables.
Pineapple is horrible, vile thing should only ever be eaten!