God is so quiet

[SteveII]

I think you are getting stuck for the moment on "possible world" semantics. The term simply means the way things could have been. We can conceive that it was possible that everything failed to exists and there was not anything at all.  There is no logical problem with that possibility.

This is precisely where we disagree.  How could it be logically possible for existence to fail at existing?  If existence fails to exist, that suggests there was some potential for existence that was never actualized.  This potential, what ever it hypothetically is or could be, would still be something.  Not nothing. 

You are overthinking this. What if there was no potential for existence? Is that conceivable? 

Why "is there no logical alternative to existence?"

I’ll answer that question with a question, if I may.  What is the logical alternative to existence?

Nothing. Not anything. Existence did not happen. There is nothing mysterious about this concept. Just...nothing at all.