Studies have shown that most of the famous atheists of history: [Albert] Camus, [Jean-Paul] Sartre, [Friedrich] Nietzsche, [Sigmund] Freud, Voltaire, [H.G.] Wells, [Ludwig] Feuerbach, all had a father that either died when they were young, divorced their mother when they were young, or with whom they had a terrible relationship.Our view of our earthly father can affect a magnified view of our heavenly father. Imagining what the perfect father is like can help us have a proper view of God. In multi-generational studies of the effect of a father on faith, the key harmful issue has been identified as the coldness and distance of the father. My poor relationship with my father negatively affected me, but I also had personal moral and emotional issues.
Source: Ex-atheist of ‘Case for Christ’ on how to help friends meet Jesus