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.
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The further a society drifts from the truth, the more it will hate those who speak it.
Educate your children to self-control, to the habit of holding passion and prejudice and evil tendencies subject to an upright and reasoning will, and you have done much to abolish misery from their future and crimes from society.