What is the strongest or most compelling argument in your view for the non-existence of God or gods?
There's no testable evidence anywhere.
Everything that used to be attributed to gods and investigated, turned out to be natural phenomenon where no gods are required.
Humans are superstitious animals that tend to invent all kinds of magical "explanations" for things they don't understand.
I'm sure this question has done the rounds on RF ad nauseum. I'm curious as to why people would be completely convinced about the non-existence of God.
"completely convinced" implies some kind of absolute certainty.
I know of almost no atheists who would profess such certainty.
There is a difference between
"I don't believe X is true"
and
"I am convinced X is false"
For me, my atheism is only defined by "
I have no reasons to believe any religion is accurate".
The result of which is unbelief.
I don't waste time or energy trying to argue that unfalsifiable entities do NOT exist.
Non-existence is assumed (for all practical intents and purposes) until existence is demonstrated.
If I am not given a valid reason to believe claim X, why would I believe claim X?
Especially if X is a mega-extra-ordinary claim which requires me to also believe that the laws of nature can be violated / suspended?
That being said I am a committed theist and the the God I believe in is an Unknowable Essence.
I submit that in any other context, for any other claim... you would instantly recognize the irrationality of believing something defined as "unknowable".