We can prove that God does or does not exist. We can also resort to the absurd.
The Bible features right up their with other folklore, e.g. Grimm Brothers' Fables. There is no evidence for its historicity.
It seems a theist thought atheists couldn't sleep near a place of death, i.e. cemetery, not even for a million dollars.
Atheists are obligated neither to leave things to sheer luck, nor to thank anyone other than human contributors when life goes well.
Some very short answers on atheism written for Quora re what atheists think on various topics.
It's really difficult answering the question without using the words and concepts in the question.
Non-belief applies to much more than theism vs atheism.
When biblical promises fail, and evidence is not forthcoming, atheism is the outcome.
Rejecting God is not atheism. Atheism is lack of belief in God.
Atheist associations serve serious life issues, and are far more than a group for non-Santa Claus believers.