Why do kids love to eat things that are not supposed to be edible?

Does anyone remember candy bubbles? I sure do! I remember it like it was only yesterday.... I loved the sweet taste of dish soap and grape Dimetapp as the bubbles popped on my tongue. Yummy! There must have been marketing geniuses behind that one because everyone knows that kids loved to eat things that technically should not be edible. Like gummy worms, candy cigarettes, boogers, and yes even bubbles.