Our brains are not "wired for religion". That is religious propaganda.
The human creators of religion have used their understanding of emotion (happiness, fear, etc) and human nature, to codify a set of rules to impose their will on the rest of society, through manipulation of the masses.
Expectations from religious folks are that atheists must have some universal code for explaining everything, creation, etc, etc, ad nauseum, when quite honestly, atheism does not require that one have all the answers, and just the opposite, many atheists believe such questions are either unknowable, or irrelevant/unimportant to creating a better and more just society based upon humanism or some other secular philosophy.
Despite the best (worst) efforts of organized religion, atheism is alive and well, and growing.
ADG