Human psychology insist every human being to accept the existence of the creator, unless he has been conditioned to believe the contrary . I am ready to bet on that 97% of the human in the world believe in the existence of creator be it scientist, astronaut , doctor , computer professional or be a psycho too. Hence I can conclude that believing in god requires no reason or proofs while rejection of god does. I am also trying to do the depth study of religions one by one but here again if almighty will allow me and support to do it. :)
Some of the research papers broadly categorized the religions of this planet into two categories .
Here Semitic word is derived from the name of one of the character of holy Bible Shem considered to be son of Prophet Noah. Descendents of Shem are known as Semites. Hence the Semitic religion are the religions that originated among Jews, Arabs, Assyrians, Phoenicians, etc. Major religion in this category are Judaism, Christianity, Islam,
Also known as prophetic religion that believe in divine guidance given by prophet of God.
Non -Semitic religions are further sub divided in to two more category
Named on the community or race consist of powerful group of Indo-European speaking people that spread through Iran and Northern India in the first half of the second Millennium BC (2000 to 1500 BC). Almost all of the major Aryan religions are non-prophetic religions.
It is further divided into two major categories
Religions have diverse origins. Like Confucianism and Taoism are of Chinese origin while Shintoism is of Japanese origin and do not have a concept of God. Some critics refer them as ethical system rather than as religions.
Confucianism moral and religious system of China is also considered to be agnostic religion and do not comment on God.
Taoism refers both to a Chinese system of thought and to one of the four major religions of China and do not have a concept of God. Tao means the way or path. Taoism has had a significant influence world-wide: in many Western societies it can be seen in acupuncture, herbalist, holistic medicine, meditation, martial arts, Feng Shui and Tai Chi .
Aryan Vedic :
Hinduism is an assortment of religious beliefs, most of whom are based on Vedas and Upanishads. It is commonly perceived as a polytheistic religion. Some believe in the system of three Super Powers some believe in the existence of 33crore i.e. 330 million Gods. However learned Hindus who are well versed with their scriptures insist that a Hindu should believe in only one God. But then what is 330million ?
Its very simple as per the Hindu believes every thing is god (God is present in) be it tree, sun, moon, animals or even U and me . And as per believe their is 330 million creatures are in planet hence if every thing is god then 330 million gods are their.
Second believe of 3 super powers are considered to be the attributes of god; Creator, Sustainer and Destroyer (Brahma, Vishnu & Mahesh), originated from the null (sunya or Zero or Null ) called "OM" (its nothing but only a sound ) means god attributes originated from sound. ( In scientific term I can explain it with an example of nucleus of an atom. So their is different attributes of atom its an creator , its an sustainer its and destroyer too but its self existence is nill ie Zero its an totally different matter of fact, what it creates, what it sustain and what it destroy.) That's why in yoga this sound has a very special significance. I don't know how you will take it. But its an believe of millions of Hindus and mine too. Their is thousand of other believes too but most of them at last conclude in these two believes only. Hinduism believe in the doctrine of incarnation (Avtars).
Aryan Non Vedic:
Sikhism: Its an non Vedic religion but considered to be the offshoot or branch of Hinduism founded by Guru Nanak at the end of the 15th Century originated in the area of Pakistan and northwest India called Punjab meaning the land of 5 rivers. GuruNanak was born in warrior cast of Hindu family but was very strongly influenced by Islam. Sikh word is derived from the word Sisya meaning follower. Its an religion of 10 Gurus (Teachers). The sacred book of Sikhism is Sri Guru Granth also called Adi Granth Sahib. In this religious believe their is one supreme god who is in the unmanifest form called "OM" and having several attributes. While Sikhism does not believe in incarnation means god does not incarnate himself in what is known as avatar. Also idol worship is strongly against this religion.
Buddhism is considered to be agnostic religion and do not comment on God . In the religion its neither confirm nor deny the existence of God. But I know most of the Buddhism followers believe in existence of almighty. This religion and philosophy founded in India c.525 B.C. by Siddhartha Gautama, called the Buddha. There are over 300 million Buddhists worldwide. One of the great world religions, it is divided into two main schools: the Theravada or Hinayana in Sri Lanka and SE Asia, and the Mahayana in China, Mongolia, Korea, and Japan. A third school, the Vajrayana, has a long tradition in Tibet and Japan. Buddhism has largely disappeared from its country of origin, India.
Jainism is considered to atheistic religion which do not believe in the existence of God. Being an ascetic religion of India, that teaches the immortality and transmigration of the soul and denies the existence of a perfect or supreme being. Arose in the 6th cent. B.C. as protests against the overdeveloped ritualism of Hinduism , particularly its sacrificial cults, and the authority of the Veda. Jain tradition teaches that a succession of 24 tirthankaras (saints) originated the religion. The last, Vardhamana, called Mahavira [the great hero] and Jina [the victor], seems to be historical. He preached a rigid asceticism and solicitude for all life as a means of escaping the cycle of rebirth, or the transmigration of soul. Thus released from the rule of karma, the total consequences of past acts, the soul attains nirvana , and hence salvation. Mahavira organized a brotherhood of monks, who took vows of celibacy, nudity, self-mortification, and fasting. Since the 1st cent. A.D., when a schism developed over the issue of nudity, there have been two great divisions of Jains, the Digambaras [space-clothed, i.e., naked] and the Svetambaras [white-clothed]. Jainists, then as now, accumulate merit through charity, through good works, and in occasional monastic retreat.
Zoroastrianism (Parsiism) is an ancient Aryan religion originated in Persia more that 2500 years ago. Though it has relatively few adherents, less that one hundred and thirty thousand in the whole world, The Iranian prophet Zoroaster was the founder of Zoroastrianism. The scared scripture of parsis is the Dasatir and Avesta.
Judaism is one of the major Semitic religions. Its followers are known as Jews and they believe in the prophetic mission of Prophet Moses. That's what I am able to explore so far.
Christianity and Islam: They are almost same only way of seeing things different . Both religion believe in the one supreme power . Both of the religions believes in the existence of Jesus. Difference is that in Islam its believed that Jesus was one of the mightiest messenger of god while Christian believes in divinity of Jesus. In Islam it is a believe that Holy Quran has word of God revealed to Prophet Mohammed. Also Idiol worship is strictly prohibated. As per islamic belives every thing is of god's be it tree, animals, human, sun, and moon.