For every living thing, there is a creator. Our invention is technology, and Gods invention is us. But many people will say that because they have never seen any evidence to suggest that gods are not fictional, and it seems that neither have atheists, because none of the reasons they use to justify their faith comes close to being evidence, or even particularly reasonable.
And their conviction is further reinforced by the way that some atheists regard unbelief, or the belief in different gods to their own, as deserving of violent punishment. this makes many wonder why they're so afraid of disbelief.