Although one can come to the conclusion that a god does not exist, the best core reason to me has nothing to do with good or bad happening in one's life. Just mere lack of evidence. You certainly can argue the morality of an all powerful being with its selective nature and also not asking for our input and being immovable.
The idea of an invisible thinking entity without a label of any kind, by itself is absurd considering we only find cognition in biological evolution.
The idea of an invisible thinking entity without a label of any kind, by itself is absurd considering we only find cognition in biological evolution.