Simply put, a belief defines an idea or principle which we judge to be true.
Who is this we? Some people believe in god. That doesn't mean "we" do. Do you mean a belief is something an individual judges to be true?
The lack of belief of the atheist comes from the fact that the doesn't share the same judgement as the theist. But his lack of belief isn't the direct result of the lack of evidence.
So now you're going to try to tell me what I believe or don't and why? Really?
That lack of evidence results in lack of knowledge.
A ridiculous unfounded assertion. You really should dedicate an entire thread to this. For now, think of it this was. I lack evidence that you are a zebra. That doesn't mean I lack knowledge of your status as a zebra. A zebra is a real thing with properties well know. Deities are undefined, there is nothing there to assert that we lack knowledge of until someone can even tell me what the thing is.
As a corollary example, we lack knowledge of exactly what dark matter is. We do have evidence it exists, but we do science to get more information. Before we had evidence it existed, there were mathematical calculations that showed it should exist. We had a reason to look before we even had evidence! Before the math and before observations, we lacked a reason to even think there was such a thing, we lacked knowledge AND evidence. That's not at ALL the same as god, we simply have the assertion that it exists with nothing else. No one have given us a reason to think there is anything there that we lack knowledge of. In fact, all positive evidence points in the opposite direction.
But that judgement he makes is in itself a belief.
No, it doesn't. Why do people keep trying to say "not A = A"? It is logically impossible! It's like saying "you don't have any money, therefore you have money!"
What I'm trying to say is that there seems to be an illogical proposition to say that lack of belief is a direct consequence of lack of evidence.
That's because you are getting all sorts of things wrong.
The logical consequence of lack of evidence is lack of knowledge.
Such as this.
The direct consequence of lack of evidence about the existence of God is agnosticism.
And this.
Ok, I'll rephrase: Most atheists that I have come in contact with ....
Rational people SHOULD be offended when people make bad arguments about others feelings and ideas and assert knowledge they cannot possibly have.