[Dataman]

Atheism is a lack of belief in deities. That does not constitute a world view.

Another useless opinion.

It affects your morality, your understanding of man, and your understanding of yourself. It affects your thinking since to you it becomes a first principle. To claim it is not a world view is to claim theism is not a world view. That's just absurd. Why can't you guys just be honest about your belief system? You spend too much time denying that you believe exactly what you do indeed believe since it is, quite frankly, intellectually embarrassing.

[Dimensio]

It affects your morality, your understanding of man, and your understanding of yourself.

No, it doesn't.

THEISM may well affect a person's morality, understanding of "man" and understanding of the self. Atheism means that the influences of theism will not be a factor in said understanding.

I guess that you could call that affecting understanding, in the same way as not getting hit by a bus affects your odds of surviving throughout the day. I, however, don't consider the abscence of influence an effect.