But the bigger question is, What is religion in everyone's view ? Can one survive without religion ? and what would have become of this world today if there weren't not any religion at all to start with ? Will philosophy instead replace it ?

Actually why limit to atheism and theism ? there are people in the world that cannot be bothered with either one of this.

@Kengz , Meaning of Pantheist
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The two quoted post above reminded me of something that I was thinking about some years ago. In many ancient religions, statues and carving of Gods were available and this gave an image for the people to know and remember how their Gods look like. Often Myths of the gods were shared to boost support and devotion to their gods. Many ancient religions shared the same features in terms of how the Gods were portrayed to the people, and how the Myths influences their daily lives. However, newer religions like Christian, Judaism , and even Islam completely rejected that God has an Image. and rather they provided another source of inspiration for the devotees to keep in their heart. These were nonetheless, Images of Jesus the Messiah, the Holy Bible , the holy book of Torah, the Quran and some others.The word God itself have gone through a new reform when physical statues were replaced with mental faith. Word paganism was created to refer to Ancient religions, and from there onwards we could see how these new religions were fighting among each other in order to subdue one another.
Personally, I believe religion is something that Humanity came out with in order to maintain stability and order in the society. It could have been made out by a group of influential philosopher , think tanker, or even religious persons. Bare in mind that, in the older days, Religion could win an empire a war better than the government. The Romans whom were pagans themselves before, became enthusiast christians and even ransacked Temples of other religions that were considered as Pagans. The reason I am believing in so is because of the much similarity of Islam and Christianity. Islamic scholars claimed that Islam existed long before any other religion did, ever since the noble birth of the first human, Adam and Eve. But, the story of Adam and Eve was already told in the Torah and the Genesis. Could they be talking about 3 different Adams and Eves ? Judging from the birth of Christianity, which geographically at the same place where Judaism was hosted, Could it be that Christian took teachings and values from the earlier teachings of another religion, refine it, and form their own religion ? Could the same thing have happened 300 years later when Islam was born ? Does the word religion now still have the same meaning as 3000 years ago than 2000 years ago ? 

These 3 religions, Judaism, Christian and Islam have much similarity to each other than differences. There are no other religions that ever existed in the world shared so many common points and also left so many rooms of arguments in terms of their origins. As much as these 3 tried desperately to show that they are different from one another, none of these side could ever provide a good explanation on their origins. The only found solution for them was to eliminate each other so that they can claim the "copyright" of the history for themself.

The effect of these new religions have led to generations in this millennium to create an image of god in their own mind. People now are taught that, "There is only one god, although there are many different religions" , compared to the Ancient times when God can also be God(s). Ancient year china, where taoism plays a crucial part in securing faith into a religion, Deities were also considered as Gods, only as years gone by, God came into existence in the culture and thus Deities are just Deities, they are just like Angel Gabriel in Christian. Many more educated persons in the world who would probably share my opinion have crossed the line and became an Atheist instead. People now labelled people last time as Pagans and that they do not know how to respect God. But Look at humans now, we are manipulating the word God and its teaching to our own benefit more than those people in the ancient years did. Religion is now a huge complex system to bind people together to believe in what we should be believing in this age of time, but the belief could alter as time moves on. Could it be because of this that No static image of God was ever allowed? If so then wouldn't religion be a huge false consciousness of humanity ?

There are however a few religions that are like the Ancient religions. Buddhism for example, Whats the difference between Buddhism and Egyptian Religion ? They both have underworld, they both have values to be pass on to devotees, they both have temples and they both have a certain custom. While we cannot expect every religion to be spreading the same thing, we must accept differences in culture and norms in the religion. In Buddhism, we have statues and paintings of Buddha, the Buddha script, the Buddha teachings, Buddhist monk. Well these are the things that Ancient religions have as well, but the bigger question now is. Why is Buddhism considered as an "Ideology" by many people and not as a Religion ? And if Ancient religions were labelled as Cults and Pagans, then how did Buddhism and Hinduism survived till date ? Could it be because the newer religions like Christian and Islam did not manage to spread through the Eastern Hemisphere and establish itself as a dependent school of thought? Ancient egyptian and greek religions are still labelled as Religions today, where as Buddhism as labelled as an Ideology.  So where does this put Taoism and Confucianism ?

Sorry for my long post.