For all the hard atheists believing the metaphysical cannot exist I think it is entertaining if you ask yourself the following question:
Have you considered the possibility of deities that are not infinite? Christianity is what your used to, toss that idea all together.
We live in a relativistic universe. Atoms decay in a probabilistic manner. It is impossible to predict the exact moment decay will occur, just the probability.
Are you willing to fully commit to the idea their are no metaphysical entities that can apply limited influence on seemingly random events?
We are dealing with probabilistic functions rather then deterministic functions after all. In reality, the bell curve does not describe the world very well at all, but rather extreme events occur far to frequently then they should. This is typically referred to as Extremistan:
which is contrary to expectation of averages and the Heisenberg uncertainty principle.
Even more ironically, many consider it to operate on nothing more then "dumb luck". Yet it doesn't conform to modeled probability.