Yes, I believe there is no god.
No, I only lack a belief in a god.
The burden of proof rest with the one claiming the existence of something. Do you all believe that there isn't a teapot floating between Earth and Mars that controls everything on Earth or do you simply lack belief in it? Most reasonable people would believe it doesn't exist because there is no proof. Scientific integrity means that one cannot believe in something for which no evidence is presented. If evidence was presented, I would change my belief, but I doubt it will be. Simply lacking belief is agnosticism.
I believe there is no God because the idea of God was created as a symbol of hope for people in dark times. The godly figure is essentially a scapegoat for all that cannot be explain or for things people don't want to be responsible for. It can also be seen as a parental figure that provides security for its followers beyond that a mortal parent could provide. A god is simply not a practical being. To say that all of the past, present, and future and everything it withholds is limiting the human capabilities and sight into the things that have not yet been proven. God and religion also counteracts that which has been proven. Religion and god is understandable because of the hope and security it provides but that is it.
Give me proof, and I'll convert.
I'm an apatheist, i.e. pragmatic atheist. I don't believe there's no god. I just don't care because I know it shouldn't affect my decisions. I base my morality on human nature and my goal is to serve humanity and not a deity.
If someone could provide me with cold, hard facts proving that there is a god of some sort, and I believed it, I'd join that religion.
I do not agree that the idea of God exists. That should sum up my vague beliefs.