Answer:
If you have me, you want to share me. Once you share me, you won't have me. What am I?
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I cannot be burned in fire or drowned in water. What am I?
Bright as diamonds, loud as thunder, never still, a thing of wonder. What am I?
I go inside boots and outside shoes.
I'm a soft, sweet food made from a mixture of flour, shortening, eggs, sugar, and other ingredients, baked and often decorated.