It sure enough is. EVERYONE has a belief system of some kind, a worldview if that suits you better.
Some include God, some don't, but it is still a system which operates on *beliefs* as it operates on something that can neither be proved or disproved objectively.
This is not something I really expect any of you to understand. If you could understand it, you wouldn't be religious. These debates usually end up here: with the theist trying very, very hard to recast the atheist as just another kind of theist. Usually you're trying to recast us as some level of satanist who is trying to deny God for dark reasons, or someone who is angry with God. If you can do this to your own satisfaction, you have kept your world God-centered by assigning the atheist a role in it that you can recognize and understand.
I suppose I shouldn't let it irritate me... we are fortunately no longer in an era where your type can get your hands on my type and bring on the copper boot or whatever. Tell you what... I'll let you have the rest of the thread. I actually DO have laundry and errands to run out there in the real world. And we all know this will never come to any conclusion that satisfies anyone. You all have a good 2012, and let's all hope that the truth didn't lie with the Mayans after all.