I would ask God to explain the meaning and purpose of our human existence. The obvious question would be:
Why do we exist? (but that is my secondary question)
Contained within that question I would want to understand why my God, who is all powerful, all knowing and the creator of everything that exists, would do the following:
Why would my God create the human species with free will, knowing that this gift of free will would result in War, poverty, racism, hatred, envy, suffering, death and the destruction of planet earth? Why? It doesn't make any sense.
Let's assume that God loves us so much that he gave us free will to show us his infinite love, right? It still doesn't make any sense because God is allowing humans to willfully destroy God's very creation. I am an engineer by trade and so I view the human as a machine. When I observe this machine I conclude that this machine is defective and needs to be repaired, right? As an engineer, I want to evaluate the "Free Will" circuitry, and modify it in such a way that war and self destruction are not possible. I would would redesign the human machine to automatically enter an emergency mode where it would temporarily shutdown until the problem could be corrected. In my opinion, Free Will only works when people make well reasoned and informed decisions that do not destroy, but as we ALL know, most of the problems caused by humanity are a direct result of "Free Will" and the inability or unwillingness to make rational and well informed decisions.
So here is my question for God:
What is the point of our earthly existence, if Free Will ensures our self destruction and the elimination of the human species?