I disagree with the assumptions of this question. I don't think we live in a world that must worship God.
Although I, myself, believe in God and attend mass to give praise and worship, that is not something I am required to do. I chose to do it because of my free will. So, in the same sense, others are also free to not believe in God or any god, and they don't have to worship, either. That is why we have atheists and agnostics, who are free to exercise their belief that God does not exist or that the existence of God cannot be proven, respectively.