Is atheism a belief?

[Angrboda]

My word but you are wrong a lot. 

I am sure that I am wrong a lot!

Please help me to understand why you think I'm wrong.

 Atheism is a belief in the same way that not collecting stamps is a hobby or bald is a hair colour.

Let me clarify what I'm saying here, and then I hope you'll tell me which of my statements is incorrect.

~ All adult atheists have heard claims made by religious people. For example: "God made the world." 

~ All of us reject these claims. We do not find them persuasive.

~ We reject these claims because we have solid convictions about what constitutes good evidence. For example, "scientific evidence is better than revelation, and there is no scientific evidence that God made the world." 

~ Therefore, all adult atheists have commitments concerning the way we evaluate truth claims, and these commitments lead us to reject the claims made by religious people. 

~ If we didn't have commitments concerning the way we evaluate truth claims, it would mean that we reject religious claims based on no reasons, but merely on a whim or by personal preference. 

If any of this is wrong, please explain why. Thanks.

False. Your generalizations are unfounded. As a teen I was an atheist because I didn't believe that a god existed. I had no position on the evidence, and indeed was largely clueless about what the evidence does or doesn't show. Many Buddhists are atheists, or at the very least, atheistic, because they embrace the worldview of Buddhism, not because they reject Christianity per se, or find something lacking in the evidence. Both the Buddha himself and Confucius were agnostic about the possible existence of higher powers and gods. They were in essence agnostic atheists, not because of any reaction to the traditional gods, but because they were skeptics who embraced a different metaphysics and philosophical outlook. And many of the "nones" that don't believe in God are also equally as uninformed about or uninterested in the evidence. (A recent article on the growth of the nones in the younger demographic suggested that the nones were not so much rejecting religion as they were, instead, simply ceasing to care, as suggested by their poll answrs.)

So, no, a rejection of the evidence which belief is based on isn't a universal commonality among atheists. Far from it. You're simply being ignorant.