Sadhguru
Why did humans come up with the idea of God in the first place?
Why the idea of God arose
The idea of God came because we had no explanation for creation and had not paid attention to it. If you pay enough attention, you can see that whoever created a flower, a leaf or a blade of grass is brilliant.
The idea of God, or of a source in some human or animal form, has come essentially because you have not paid attention to the creation.