Please present positive arguments why you think atheism is true

[Darwinian]

The naturalism, empiricism and the ethical theories of atheism are false. An atheist passes the burden of proof to the theist and then starts finding what he regards as flaws in each theistic proof, and believes his position is justified.

What part of "You're the one making the claims so the burden of proof is on you." are you having the most difficulty in understanding?

And how can atheism have any theories? It is simply the position that an individual holds regarding the lack of belief in a god or gods.

Atheism is not a religion, a philosophy, an ideology, a theory, a belief system or anything else. It is simple someone saying, "Hmm, I don't believe you."

How can you be so ignorant of such a breathtakingly simple fact? Oh, right!