Athiest vs Agnostic
I think the difference between atheism and agnosticism is a huge source of disconcert and misunderstandings. I would even go so far as to say that a huge portion of self-proclaimed atheists do not actually understand the correct term for their own beliefs. The vast majority of religious people are eve more ignorant of the difference, as is understandable, given that both groups "are not them," and people's general habit of focusing more on the details of things that "are them."
Simply, atheism means no god. It means, strictly, that the follower believes there is no god. This is inherently a belief.
Agnosticism means without knowledge. This means, almost literally, "I don't know." This means it would apply to anyone, and everyone, who is not confident in the existence or non-existence of some form of deity. Technically this means that many Christians are actually agnostics, since they don't really know. It also means that virtually all people who's belief in a lack of deity is science based are actually agnostic, since the statement "there is no God," cannot (yet at least) be proven.
So, when someone says that atheism is a belief, they are technically correct (unless said atheist has proof that no deity exists). But, believing, itself, should also not be considered somehow bad. If not for belief, we would not be able to function. Consider not being able to believe anything you see, hear, taste, or smell. Biology tells us that all of our senses are perceptive, that is, interpretive... so if you see something, you believe it is as you see it.
The understanding that no one is perfect, and that all of our beliefs must be flawed in some way also allows some who believe one thing to tolerate the beliefs of others; maybe they have it right? maybe not?
And, of course as a final note, I'd just like to say: All hail our new Alien galactic theocratic overlords!!