“ God's being good does not somehow magically make all Christians good. ”
God could easily at any moment prove he existed beyond doubt with some amazing show of power which would have everyone kneel to him in awe. That is not what he wants. Real belief can't be gained by a dazzling show and a loving relationship can't be won through force.
~ Lewis N. Roe
The claim to know that no god exists is just irrational. The non-existence of any god has no evidence, let alone proof. To know something for certain there must be proof. To hold to a belief there must be evidence. Untilthen, the only actual reasonable position is agnosticism.
Having been shown the possibility that God exists, the atheist haschosen not to accept it. They have no proof or even evidence oftheir belief, but will stick by it. This takes blind faith.
Whether you say that a god does exist, or that none do, it is a claimto know (or at least believe in) something. Once you claim to knowsomething, you can't call that a lack of belief in the opposite viewand then say it's the place that you started.