Humans are inflicted with an unquenchable desire to understand. WHY is implanted in the human psyche. It likely caused us to spread across the world, find small islands in the midst of great oceans and name and try to understand all lifeforms and the nature of ourselves.
It would be inevitable that such a creature as the human, conflicted by an extreme need to know, would touch the limits of what can be known and still have no answers to their own existence, why their consciousness exceeds all other animals by magnitudes that make no sense from a natural order standpoint.
At this point in our journey a Cause external to natural order becomes as logical an answer as any to why we exist. It can be shown that not a single human community in any age or location existed without being bound together by religious belief.
Now God may have been present in the first abstract thought one of our very distant ancestors had. When we painted on cave walls with notions of respecting the spirit of animals, God too was forming in that darkness. When we worshipped the power of volcanoes, seasonal rains, natural phenomena, God was forming in the mix of this understanding.
We moved from gods to God about 6000 years ago, likely because of the Egyptian religions who it seems were the first to teach a monotheistic God.
Today, regardless of one's belief, you are standing in a human society built by religious belief. Today the confusion is so great that your 10 reasons and more are all likely candidates for why people become God believers. That said, in the vast majority of cases the religious experience is tribal, self-fulfilling and more to do with fear and loneliness than a genuine search for meaning.
