A.C.Grayling – British moral philosopher, in 2006 wrote an article discussing the question of “Can an Atheist Be A Fundamentalist?“
The simple answer is his last line of article, he says,
…one can grant that the word “fundamental” does after all apply to this: in the phrase “fundamentally sensible.
On the topic of what to tell one’s children about God, he says:
Let us challenge religion to leave children alone until they are adults, whereupon they can be presented with the essentials of religion for mature consideration.
For example; tell an averagely intelligent adult hitherto free of religious brainwashing that somewhere, invisibly, there is a being somewhat like us, with desires, interests, purposes, memories, and emotions of anger, love, vengefulness, and jealousy, yet with the negation of such other of our failings as mortality, weakness, corporeality, visibility, limited knowledge and insight; and that this god magically impregnates a mortal woman, who then gives birth to a special being who performs various prodigious feats before departing for heaven. Take your pick of which version of this story to tell: let a King of Heaven impregnate — let’s see — Danae or Io or Leda or the Virgin Mary (etc., etc.) and let there be resulting heaven-destined progeny (Heracles, Castor and Pullus, Jesus, etc., etc.) — or any mythologies — then ask which of them he wishes to believe. One can guarantee that such a person would say, none of them.