There is no cause and effect as we no it before the big bang. Time is just a dimension of the universe. For all we know, there was no time before it... And there are times that cause and effect don't apply in the same order... With effect coming before cause (at least in a laboratory)... And I forgot where I was going with this idea, but its a cool idea nonetheless.
How is it that you are ready to accept the idea that there can be a a beginning without a cause but not that there can be a cause/being without a beginning?