Because they get to be in the Lollipop Guild in the Land of Oz!
It's attached to a yellow plastic handle so that you can hold it while you sing about witches meeting their untimely ends. Best Job EverWhen we grow up, we want to be Munchkins! Use it only to complete a fabulous Oz-themed costume, which will make you much happier than trying to eat plastic. This is a prop, not a real piece of candy! (So to speak - they don't really grow "up" all that much).