Is atheism a belief?

[Bucky Ball]

That assumes the default valid position is theism. 

Not at all.

Both sides make claims. Everyone evaluates the claims based on the standards that he believes are best.

An atheist makes the claim: "there is insufficient evidence to believe in God." He believes this statement because of the evaluative premises which he believes are best. A believer hears that claim and evaluates it based on the evaluative premises he believes are best. 

Granted, a lot of people have evaluative premises which are not very good. But everyone hears claims and then accepts or rejects them.

Nope. 
Maybe some do. All do not. 

1. You don't get to tell other people what they are thinking, nor do you get to project on others how you think that are thinking. 

There is no "god". There are hundreds or thousands of gods. The fact that you converse with the term "God" proves your position is biased with respect to YOUR god. 
There is no difference among ALL god claims. I don't have to even agree to talk about YOUR god. I don't care about your god. Your god is not even coherently defined. 

2. IF, in fact you are equating THAT position with the position of someone of "faith" it's a pretty damning comparison. 
There can't *be* any evidence for something, until the *thing* is defined. It is not defined.