God, as creator of time, is outside of time. Since therefore He has no beginning in time, He has always existed, so doesn't need a cause. I long wrestled with the idea that the Universe could have existed forever, as a way to solve the first cause paradox, but I was never comfortable with the idea. So I've made a leap of faith and applied the same mental framework to an immaterial construct (God), and for the sake of my sanity I don't try to go further than that :-]
I believe there are questions that aren't meant to be answered, and knowing the truth would break our collective minds.
That sounds very hand wavy and not at all convincing. You could just as easily say that time is an emergent property of the universe, so the universe has always existed and needs no cause. The problem in doing that with God is you have something intelligent and complex enough that it was capable of creating the universe with the metaphorical snap of its fingers. This is a harder pill to swallow than the universe just existing, because the universe is not intelligent, is less complex, and can't create things whole cloth.
I believe there are questions that aren't meant to be answered, and knowing the truth would break our collective minds.