Seems like we are all in agreement then! There is really no position of "non-belief" but rather a denial of belief.
Some just willfully deny the existence of God. Sounds awfully Scriptural (Romans 1:18-21).
Presumption of Atheism? Seems more the likely the case of a presumption of Theism.WHILE MILITANT ATHEISTS like Richard Dawkins may be convinced God doesn’t exist, God, if he is around, may be amused to find that atheists might not exist.
Cognitive scientists are becoming increasingly aware that a metaphysical outlook may be so deeply ingrained in human thought processes that it cannot be expunged.
While this idea may seem outlandish—after all, it seems easy to decide not to believe in God—evidence from several disciplines indicates that what you actually believe is not a decision you make for yourself. Your fundamental beliefs are decided by much deeper levels of consciousness, and some may well be more or less set in stone.
This line of thought has led to some scientists claiming that “atheism is psychologically impossible because of the way humans think,” says Graham Lawton, an avowed atheist himself, writing in the New Scientist. “They point to studies showing, for example, that even people who claim to be committed atheists tacitly hold religious beliefs, such as the existence of an immortal soul.”
This shouldn’t come as a surprise, since we are born believers, not atheists, scientists say.
(Scientists discover that atheists might not exist, and that’s not a joke, Science 2.0)
This also makes sense of why Atheists appear unable to formulate their own coherent view of the world without a Theistic base (as many here know I've challenged Atheists to do in some other threads).