Dr. Craig is a liar.

[wiploc]

B
I'll put it plain and simple, you asserting that somebody said or implied X does not mean they said or implied X, especially when, like in your current case, you've absolutely no evidence to support this assertion.

As I said your premise is pure bullshit, because it posits a unified mind for all atheists which is false, and then when you try to row back and lyingly claim you were talking about one man, you still managed to put words in another person's mouth.

I, in turn, will try to be clearer: 

1) Carroll does not believe in God.
2) Carroll said the universe (or its quantum vacuum predecessor) always existed for infinity with no explanation (because he does not believe in God). 
3) Carroll said the universe (or its quantum vacuum predecessor) could have failed to exist and he could conceive there there could have been nothing.

How did I mis-characterize his position: A) If atheism is true, the universe (or its predecessors) has no explanation of its existence.? Are you saying he must have meant something else? 

Further, how is this a mis-characterization of other atheists?

This atheist does not believe that the universe the universe always existed for infinity with no explanation.  Lots of atheists don't believe that.  In fact, I assume that almost all of us lack the belief you are trying to attribute to all of us. 

Do some believe that the universe (predecessors) has an explanation?

There are a lot of us, and we don't agree on much, so I'm happy to stipulate that some of us have that belief.  

What is it?

Sorry, I don't have it on me. 

There's a huge difference between believing that things have causes and knowing what those causes are. 

Do some believe that the universe (predecessors) necessarily exists? 

I've heard that claim, so, yes, some of us believe that. 

I've read one or two arguments for that position.  I didn't find them compelling.  But they were at least as good as the Christian arguments that gods exist necessarily.  

On what basis?

You know you're way off base here, right?  You claimed that if "If the universe has an explanation of its existence, then atheism is not true."  That's not a defensible claim, and you aren't approaching a defense of it.  Asking why some of us believe something is not the same as proving that none of us should believe it.