According to the definition of "religion" - http://www.dictionary.com/browse/religion?s=t - everyone has religion, even atheists. For the atheists, atheism is their religion.
But the "Big bang theory" is a scientific theory, scientists are constantly looking for evidence to support or disprove the theory and look for alternatives.
You dont hear the religious state "the God theory" or "Jesus theory", you just blindly accept what is written in an old book and never look for validation.
Science has created modern society not religion.
This is the whole point about big bang theory.
There is no theory of God or Jesus, because those who believe, understand God to be real without having formulated a theory about Him.
Science formulated theories because they were and are honestly trying to find out what is real. Their theories start to become religion when they start to believe that they are true and real, even though they don't know that they are true and real.
Many people believe big bang to be real. Big gang is theory. So, believing it to be real is forming a religion about it. When they do this with many theories, like relativity, evolution, and black hole, they are turning science into a religion for themselves.
So you are in that gang that says my book is right , because my book says it's true without researching it
I didn't even know you had a book. What does your book say is true?