I am indifferent to atheism. It is simply what some people believe. This unfortunately reveals your hostility and intolerance toward atheists.
OK, this is what you believe, but incomplete. Science also considers our physical existence potentially infinite, and contemporary Physics considers our physical existence 'boundless. The difference is more that the limits of science is the physical nature of our existence and no more..
No, This is at best confusing. God is the Creator and exists beyond our physical existence,
Contemporary science does not claim to know God or the nature of our existence beyond what can objectively verified concerning our physical existence, ie cosmology, which is the subject of the thread. Your going off the rails and off topic,