if there is no man, there is no god and vice versa. if you dont have hot you dont have cold and vice versa..
Discussion
God does not depend on us for his existence.
clearly god needs a body/vehicle to exist. the eternal is formless and void and doesnt exist by strict definition.
Clearly we're using different definitions of "exist" - God *is* from all eternity. He didnt need to take on flesh to appear in history, however. Think of the many epiphanies in Scripture. Restricting existence to "in time and space" is rather limiting and rule out God.
I think some of your questjons might be answered by what we call the communicable attributes of God (how are we like him?) and thr incommunicable attributes of God (how are we not like him?)
https://youtu.be/bcbL6J7vzbQ?feature=shared