You can't fill in the unknown with god. That is silly. God is a man made creation. If we were to do this lets reform the whole education system.
careful now, your not being logical. i did not "fill the unknown with god". what i did was describe existence: infinite, eternal, omnipotent.
taking this definiton of existence, and comparing it to the traditional defintion of what God is, or what God would be if he did exist(an infinite, eternal, omnipotent "being"), we can conclude that God does exist, at the very least, in the form of existence.
look up panthiesm if your not familiar with it. stems from spinoza, adopted by einstein. everyone must accept the existence of God in the way that panthiests do. it is unquestionable. now, whether god is anything more than simply a collection of all things to have ever and will ever exist, that is what is up for debate.