Great explanation - Only one thing I might elaborate on. You stated that atheism is not, of itself, a worldview, but I would take that into more detail. Atheism is not evolution. Atheism is not materialism. Atheism is not solipsism, nihilism, or any other philosophical concept. Atheism is not a stance on (or against) morality or judgement. Atheism is not technically even a disbelief in doctrines such as an afterlife (ie. some atheists believe that there may be reincarnation or other form of afterlife, but this does not necessitate a god 'at the helm.')
Atheism is simply one thing and one thing only - it is the lack in a belief in a god.
Atheism is simply one thing and one thing only - it is the lack in a belief in a god.