I have every ounce of respect for Agnostics. Atheists in most cases are people with self-esteem issues.
I agree that atheism is in general a somewhat religious position, but I disagree that it's generally a self-esteem issue; or at least, that it's any more of one than religion itself. Religions teach that believers are special, after all. Atheism, on the other hand, teaches that none of us is inherently more special than any of the rest of us, at least for reasons of spiritual association.
I am personally an agnostic, so naturally I want to agree with you, but I believe the situation is a bit more complex than you make it out to be. There's reasonably good evidence that gods are in fact not influencing us in various ways that they've been said to do before. Ongoing absence of evidence is evidence of absence, it's just not proof.
Atheism is also a fairly rational response to persecution by theists. People who are religious or pay lip service to religion have been the majority for much of recorded history, and they have often oppressed those who do not claim to share their beliefs, and even some who do. In the absence of evidence of validity of religion, it is rational to disagree with it.
Ultimately, I do feel that most of the followers of YHWH are foolish and even more of them are broadly ignorant. I don't know that I'm smarter than those people, but I'm probably much more used to engaging in critical thinking. I've literally overheard people say that giraffes disprove evolution. Some people are so married to their narrow worldview that they'll snatch at anything to avoid admitting that they're crazy. They might have a perfectly fine mind, but they're not actually using it. These are the dangerous people, because they will support anything you can whip them into a froth over.