Sorry, but nope... not wrong. There could be no physical object before the Big Bang created the time space for a physical object to exist. Physical is a state which requires time to exist. Without time, nothing physical can exist or be real because there is no physical reality.
Nothing had to create God. Creation is something which applies to physical things. The spiritual isn't created, it doesn't exist physically so there is no need for it to be created. You're trying to apply physical standards to something spiritual and when I correct your error, you're screaming "special dispensation!" Your brain is unable to comprehend something beyond physical nature, even though you should rationally know that something must have created physical nature and it couldn't be physical.
You're not paying attention. Obviously something existed before the Big Bang and that something was a singularity.
And as expected, you continue to require special pleadings for your gods because you feel that supernaturalism and magic are except from the standards of reason and rationality.
As usual, boss has to invoke "special dispensations" for his argument -- i.e., one must assume as true the point that boss is trying to make, which is there is a supernatural cause behind all of this, to support the assertion that there is a supernatural cause behind all of this. Once again, begging the question already destroys the argument, because one must demonstrate the existence of the supernatural before one can appeal to it to supply a rationale for something to be in effect.
But hey, boss, why let facts and evidence cloud your decision making.
Obviously something existed that wasn't physical because physical things did not have a universe in which to exist or a time space.
the existence of something that could not physically exist.
something existed before the Big Bang, and we can be certain it wasn't physical because physical did not yet exist.
Why does it have to be a god? And are you 100% sure we can be certain about that boss? Provide the scientific proof that science is in agreement that we can be certain of this.
Your argument ignores the fact that our everyday understanding of causality has been arrived at via a posteriori inductive reasoning which means it might not apply to everything. Time, for instance, appears to have begun with the Big Bang, so there might not have been any cause for the Universe to be an effect of since there was probably no time for a cause to exist in. Applying concepts like time and causality to the Big Bang might be comparable to asking What is north of the North Pole?