Isn't it sad to go to your grave without ever wondering why you were born? Who with such a thought would not spring from bed eager to resume discovering the world and rejoicing to be part of it?
Metaphors are fine if they aid understanding, but sometimes they get in the way.
I don't know what to think about magic and fairy tales.
Complex statistically improbable things are by their nature more difficult to explain than simple statistically probable things.
If children understand that beliefs should be substantiated with evidence as opposed to tradition, authority, revelation or faith, they will automatically work out for themselves that they are atheists.