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

[SteveII]

Nope, you fail with that first sentence right off the bat. We are not going to assume a god first, that is not how good logic works.

Just like you would not assume a giant invisible pink unicorn farted the universe into existence. It would be stupid of you to simply swallow that. 

Fine tuned my ass. Humans can choke on their food because they share the same eating breathing tube, people die from choking all the time. Cockroaches are far better at reproduction than humans, outnumber humans and are far better suited to survive an extinction event like the meteor that killed the dinosaurs. 

You merely want your god claim to be true, but so what, there are other people worldwide with their fictional sky heros who try to fill in the gap too. Get in line take a number.

To add to that, I have at no point accepted the multiverse hypothesis as true. I simply don't believe in anything beyond the material universe at this point of time.

That's fine, but a far cry from saying I am not justified in inferring a designer. You are simply avoiding the question, while I am asking the question and backing it up with science and math.