Attn: Theists - What would it take to prove you wrong?

[Chas]

But you claim your god is eternal. Equally logically, I say the universe is eternal.

...But we know it isn't eternal? Big Bang? The beginning of time and space? The cosmic background radiation? The laws of thermodynamics?

No, we don't know. The big bang is one model that has a great deal of evidence, but there are other models.

You eternal god has no cause, so if not caused it can't exist.

God isn't meant to have a cause God is the cause, being the cause of all things that are caused is the idea. Without a cause nothing can be caused.

That's simply wordplay. You are defining god to suit yourself without any basis.