Aang was twelve when the monks told him he was the Avatar.
Everything changed.
Because the Avatar has duties and being a kid was not one of them.
He hates it at times.
Sometimes more than anything in the world.
The arrows on his body.
The knowledge of the elements at his fingertips.
Being the Avatar gave him great power but it also took away his freedom and his innocence.
He now stands watching a nation fall. Watching as people died and as homes are torn apart and he realizes now that it does not matter what he wants.
It does not matter that he's only a child and that the future of the world rests on his shoulders.
It does not matter that it's too much for someone so young.
He is the Avatar and he is the one who will save the world.
All he wants is to go back to being twelve and free, not a hundred and twelve and chained down by the responsibility that only he can put out the fire.
He wants to go penguin sledding with his friends.
He wants to fly around the world with Appa.
He wants to marry Katara and spend the rest of his life with her.
But those are the dreams of Aang.
The Avatar has duties and being a kid is not one of them.