Theists: What is the most compelling argument you have heard for Atheism?

[Brian37]

If God turns out to be real and He damns me to hell, I'd accept my "punishment" knowing that at least I didn't suck up to a sadistic monster and that I am morally superior to Him.

I got good news and bad news for you Ma.
Let us start with the bad news anyway.
The bad news is that you will keep on floating in this material universe until you will start use logic and start thinking that a creation must have a creator.
The good news instead is that God can not possibly punish anyone even if the karma law is there as a way
to teach and sort out problems.
You just punish yourself by not following logic.
In any case at the end when the lesson will be learn everybody will become part and parcel of the ocean of cosmic bliss.
No hell exist except the mental hell that we create by not using logic.  

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Science is pointing away from the god of the gaps, but in the extremely remote chance it was proven, based on the reality we observe now, there is absolutely no way I would worship such a being. 10,000 years of religion and not one era in that time where there was no violence which we still see today. Childhood famine, childhood disease and rape and molestation. That aspect alone would not lead me to conclude such a being is all loving or moral.

Theists will falsely say that I am angry at this god, not at all. I view this claimed being like a character in a bad movie or horrible book. It is the logic of such claims that I object to. But if such a being were proven to be real, yes we would accept that reality, but that would not cause me to want to value or worship such a selective narcissistic self centered bully.

"If" we pretend that a future would bring such evidence, I would still want to kick this asshole in the nuts and tell him to fuck off. Imagine if a parent behaved in the same cherry picking selective deadbeat manor this alleged god character is depicted as. What if a parent has 4 kids, feeds one well, dotes on it, gives it care. But leaves another outside in the freezing cold. Leaves another with an abusive spouse who beats them daily. Leaves another with a child molester. If CPS discovers this the parent is arrested and the children are taken away.

I simply cannot buy theist logic of "all loving" and "all powerful" claiming there is a magical sky wizard security guard looking out for us, not when 50 to 60 million humans die on average every year worldwide, of all ages, from everything you can imagine. It isn't a real god I object to, but the logic of claiming such things.

And your evidence that people die is.....?
Oh, you mean when the body die?
So you work out that the body is the real you, do you?  

Yea people die, but that isn't my only evidence. Science proves we die. Just like it proves DNA when humans mate leads to a baby. Science also proves the age of our planet and universe, death is merely one aspect of evolution. Even bacteria and cockroaches die.

Christopher Hitchens, " I don't have a body, I am my body". I am my brain in motion, nothing more. My consciousness was not around 1 million years ago, so what makes you think life will be any different after you die? 

The bible is a book of myth and nothing more. Humans back then didn't know our modern reality and made very horrible guesses as to why things happen. The only difference between you and I is that I don't assign good or bad to sky wizards or ground trolls. I still value the one finite life I have now.