how does those religious groups able to make such detailed books about gods and creation of the world such as the Bible?
Pen and paper.
Actually, no. Most scripture began as an oral tradition. In fact, with respect to the Christian tradition, scripture was
only spoken for hundreds of years, and spoken word was considered divine. It was only written down when the Jews were conquered (by the Persians, if I recall correctly) and they were forced to. In Islam, many consider it to be blasphemy to translate the Qur'an into foreign languages. Just to name two examples.
It is without a doubt that those religious text originates from our own imaginations.
Without a doubt you say? Hmmm.... then why do so many people not doubt them? It seems to me that if something is without a doubt, everyone and their mother would see it the same way.
Why do Americans drive on the right side of the road and the British on the left? It's an ingrained behavior given by society. In general (and I'm not saying you), religious people are some of the most ignorant people with respect to history. They believe what their parents did because it is convenient.
Do you know what the oldest surviving version of the Bible is? Do you know what language it's in? Do you know when the New Testament was written? Do you know in what order the gospels were written? Do you know about Zoroaster/Mithras/Bacchus/etc and how the story of Jesus is directly plagiarized from them? Do you know what role Constantine played in church history? Do you know how the Bible was compiled, or why the Catholics have extra books? Do you know why Catholic priests can't marry?
When I sit down and explain things to people, the response I normally get is "it's a good thing I don't really know all that, because then Christianity wouldn't really make sense". As long as people will accept and embrace their ignorance, religion will persist.
So, if there is a god, we haven't had any conscious encounter with him/her
But in religious texts, people have had plenty of encounters with gods. And you haven't really proven that religious texts are false, so they might be true.
This is just idiotic. Do you even understand what the burden of proof is?
And I said this before, but you apparently need to hear it. Conflict between groups is a part of human nature, not a part of religion. But the larger differences between groups means there is a greater chance of conflict, so religious beliefs which are beliefs that really define a person's life are easily a factor in the conflict. Even if you get rid of religion, conflict will still go on because it's human nature.
Yes, violence is part of human nature, but religion takes it to a whole new level. Wars will happen with or without religion, but at the end,
people will go home. When religion is introduced, and the reward is not on this earth or in this life,
everything on earth and everyone living may be sacrificed to bring about "another world". The stakes are raised exponentially.
If I told you to go blow yourself up to make the big invisible sky wizard happy and then he'll make you king of the playground in the sky, would you do it? I'd hope not, because there is no reason to
in this world. But people do it for religion everyday.