The universe isn't god's creation, It is my own creation based on the people and places I've seen. My universe right now is my apartment, and an immediate perimeter around it of people and objects that i can percieve through my own five senses. Because of uncertainty Once I leave a place its existence is no longer relevant. This is because I cannot perceive what is happening in places I am not. The Universe is a collection of memories and truths in everyones mind. Quantum Mechanics have proven there is no local reality. Everyone has their own reality and truth. In a sense, the universe I have created only exists in my own mind, I dont know if any of the people or places I have seen are real, other than myself. Everyone lives in their own slightly alternate universe based on the places and people they've seen, and the facts that they know. So to the question of god, I am my own damn god. And to the question of whether I really exist right now, i subscribe to the theorem, "I think therefore I am"