The brain is quite a complex object, and so is the body and by not wanting to know the truth or look into the actual reality of things, you simply conjure up ideas and make them concrete, becoming close-minded and futile in reason. This would pretty much account for The Bible, and the mass-dillusion called 'Religion'. The truth is, humans have no objective in life, as said in books and even the movie The Matrix. Humans are a plague, we are nothing, we have no real purpose other than to breed, and trying to give reason to our existence is a normal thought process, but futile. People wonder why they are here on Earth, there is no specific reason you are here, that is why we cannot figure it out. People believe that somehow they are endowed with special skills or 'God given talent'. The only way a certain skill can be specialized in is through genetic engineering, or the pre-disposition to a genetic betterment. There is no reason for your existence, and your purpose on this earth is to reproduce, just like every other primitive being. Sorry to say, we are very primitive, incapable creatures. That is why the world is being destroyed, and everyone chooses not to believe in the truth, because their minds are conformed and taught not to comprehend the truth. The truth is, we do not have a purpose. All arguments opposing this will surely prove the latter remark of beings being conformed to thought and not wanting to admit the truth.
The soul is not real, the mind is. Nihilism can be proclaimed, but because you are aware that you are here, that determines the fact that you exist. When you look into a mirror, you know you are there, therefore you exist. Atoms are quite real, and can be observed, and classifed, and known to exist. Simply saying that observation and classification doesnt mean something is there is quite close minded and ignorant.