Otherwise, why do children have fathers and mothers? Why do bacteria have a parent bacteria that underwent binary fission? Why do plants originate from other plants? Why do our body cells undergo mitosis to produce more body cells? Why do body cells need other body cells to be created? Why can't we just be born from only rocks and trees because we have a lot more of those than we have humans? And if God didn't exist, we wouldn't be saying God doesn't exist because saying that implies God exists but you're only denying such existence. We cannot think of something that does not exist so God exists simply because we think of God even when denying God.
In this context, God means a universal Creator. The First Source and Center, the first action, the infinite and the eternal, the one thing we can never fully understand because we can never fully understand everything.
I think we are all too confused when it comes to the word 'God'. I propose that we divide God up into different terms according to the Urantia Book.
God could be a Father, a Devil, a sadistic scientist, a universal constant, a judge, a law, a Supreme Being, a creation of Man and the list goes on and on.