When we took birth, we were  ignorant of everything in this world. Ignorant of what?
We did not know what to eat? what to drink? what to wear?  what to work on till we die? where to live? which is our family? ... in  fact infinite number of such questions.
Before  that we didn't even know if there were such questions to be asked? That  was the ignorant state we were in.
Today we  can answer most of these questions convincingly. How was this possible?  Through out our lives we come across numerous other human beings(who  might know answers to such questions) with whom we develop  relationships. Our parents, teachers, elders, friends, books etc help us  find answers to the infinite number of such questions. 
When someone asks us "How did you deduce that sugar is  sweet?"
We say when we eat  sugar we sense the sweetness through our tongue. Therefore we declare  sugar is sweet. 
Similarly when we are asked "How did  you deduce that fire will burn?"
We say when we touch fire, it burns our skin. Therefore we  declare fire burns.
Now if someone asks a question "Is GOD  just a myth?" 
Some of us  say it is a myth because we cannot see him. Our elders have told us GOD  exists so we believe/don't believe GOD exists. 
If you see the above three questions, we are happy because  we know answers to all the three questions. But the impact of finding an  answer to the third question in a way similar to the first two is  really exciting & interesting. But how many of us have ever  tried to find if GOD is just a myth or does GOD really exists? Is it as  easy as finding the sweetness of sugar?
Knowing  an answer to a question is acquiring knowledge. The knowledge acquired  can be right or wrong. It is always good to acquire right knowledge  unless we have other intentions! Right knowledge about any object can be  acquired by us through various means. 
Generally  accepted means are
1)  Knowledge gained by the means of senses
2) Knowledge gained by the means of inference
3) Knowledge gained by the means of  analogy
4) Knowledge  gained by the means of texts
Now coming to our questions Is GOD just  a myth? We say we cannot see GOD, hence it is just a myth. Seeing is an  action of one of our senses. We should try to perceive GOD through  other senses. 
It is a common practice in  Science to  infer something when you cannot practically prove it through senses.  Similarly if we are not able to find, Is GOD just a myth? we have to  infer it from the perceived facts. Any rational person who observes this  creation (existence of the  universe) - its complexity, its structure,  coordination and beauty -  makes an attempt to identify its cause (the  sustaining principle behind  it). We can easily say that creation is not  an ignorant act. If it is then an intelligent act we can conclude that  the entity from which the creation happened will be super set of all  intelligence because any creation is just a part of that entity. So we  can conclude that the entity responsible for the creation is OMNISCIENCE  [knows everything].
Just like there is a potter behind a  pot, we can say that there is an entity behind the creation. Now the  entity which is responsible for the creation must be an ever existing  aspect, if not then, that again will be a creation of another entity. So  any creation must have come from an ever existing aspect. Therefore the  entity from which creation happened is ever existing. 
To create something we must have raw materials. For the  creation to happen the entity responsible for it must create from  nothing or from itself. Ruling out the former we can easily conclude  that raw materials for creation came from the entity itself. So the  entity manifests itself in all the creations. Hence the entity must be  OMNIPRESENT[present everywhere]
Similar  logical analysis must be done to get clarity on the subject. The entity  mentioned in the above analysis is termed by theists as GOD. Well  science calls that entity "Unexplored Science"
Inference has its limits and it acts as a very good tool to  acquire knowledge about GOD. However it wont help us prove if GOD  exists? 
We have now got some clarity on the  question Is GOD just a myth? I will continue the article in another  post. Please keep watching the space...