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

[SteveII]

In order for my conclusion to be irrational, you would need to provide alternative reasons for landing the winning ticket despite the odds having enough zeros as the molecules in the universe (or half that, of halve that again--I don't care--it does not matter).

......lol, no, I wouldn't.  I don't have to do anything in order for some nonsense you believe in to be irrational.  You're handling that all by yourself.

If you say, "I don't know" then my reasoning that it was fixed is better than that. At least I have math providing good evidence that it was.

You didn't do any reasoning, or math....?  You believed, and so sought out what you thought was a rational argument.  It wasn't, and not only that it's truth was unacceptable to you.  So here you are, pages later, still bullshitting us.

1. The fine-tuning of the universe is due to either design, chance, or physical necessity.
2. The fine-tuning of the universe is not due to design or chance.
3. Therefore, the fine-tuning of the universe is due to physical necessity.

1. The fine-tuning of the universe is due to either design, physical necessity, or chance.
2. The fine-tuning of the universe is not due to design or physical necessity.
3. Therefore, the fine-tuning of the universe is due to chance.

Are these, in your estimation, rational arguments against your god?

No, they are not good arguments because the universe is not the way it is by necessity or chance. I have mentioned both and I have yet to hear back a reason why either is more probable than design.  If you think it is, make the case.