There are many theories about belief in God.
One recent theory is the "God Module". The God Module was discovered when researchers tried to understand why certain epileptics experience deeply moving spiritual experiences during, and between, epileptic seizures. It appears that the seizures occur adjacent to an area of the brain, called the "God Module". The God Module allegedly predisposes us to transcendent feelings. It supposedly developed as a survival mechanism. By giving us a shared sense of something greater than ourselves, we bond into groups more readily and are more socially compliant. Or so the theory goes.
There are many other theories for belief in God but I want to focus on the anthropological evidence.
After man developed enough language to ponder life and death, he came up with the concept of soul. He then attributed soul to animals -- especially ones important to his survival. He performed ceremonies to the animals’ souls. This is known as "animism".
Animism evolved into anthropomorphism: the attribution of uniquely human traits to animals, forces of nature, the sun, the moon, lakes, mountains, and other features of nature.
Animism and anthropomorphism don't, of themselves, constitute religion but they do rely on the concept of souls or spirits . . . which led to the concept (meme) of God. Primitive men were in constant fear of death; they didn't live long and had little by way of medicine or healing.
When superstitious ceremonies and rituals (to attune with nature and bring good luck), combined with veneration of souls, worship (appeasement) resulted . . . and gods were born. Fear of death gave birth to gods.
Gods proliferated and all kinds of primitive rituals and ceremonies spread throughout humanity.
The great world religions emerged from the bronze age (Islam was a latecomer) and incorporated many primitive rituals and ceremonies. Warrior gods, with a lust for blood-sacrifice and obsessive worship, were incorporated into the Abrahamic religions. Surely you can see the remnants of these primitive superstitions in the Torah, Old Testament and the Qur'an.
That religion evolved from animism and anthropomorphism seems plainly obvious to me. Man simply got more sophisticated over time. The process is ongoing, so you should be able to recognize it as the concessions religions make to knowledge.
So could there be a God who divinely inspired man to write the Bible? If He did, then the divinely inspired, holy, Bible would be Godly. Wouldn’t it?
But, is it?
How many of you support slavery? Genocide? Subjugation of women? How many religions still support these things? Christians everywhere condemn these biblical mainstays. But the divinely inspired Bible accepts them. How can true believers condemn what their God supports, condones or even participated in?
Clearly, people need to keep an open mind and, if they must, find holy scripture that does not espouse ideas and practices that WE KNOW ARE WRONG. If everybody would only invest their faith in scripture that does not contain things we know are wrong, then religions would fade away -- BECAUSE THERE IS NO SCRIPTURE THAT DOES NOT CONTAIN THINGS WE KNOW ARE WRONG.
It's really as simple as that. People ignore the bad things about their scripture and tout only the good (selective worship). They never question how the divinely inspired, holy, scripture (their source of belief) can contain such atrocious ideas and acts.
It all boils down to choice. A person's religion is his/her choice -- his/her personal preference -- not a valid, logical, conclusion (and no more valid than anybody else's personal preference). If everybody would admit this, then fundamentalism and zealotry would evaporate. There'd be nothing to fight about.
Wouldn't that be nice?