What’s the importance of religion in our life & who created it?The existence of human civilization which goes back to the past is not known yet but during different times some belief existed. This belief was often gone beyond the imagination of normal human beings & so few referred to this as supernatural. The term later on manipulated to spiritual & like this things went on changing as per different times. This is to be understood that the "religion" has been created by us & as per our own comfort & so this can't be perfect at all & at the same time do consists of bias attitude & also carrying the contradictions with other beliefs as well.
We are existed within this nature which doesn't come-up with any bias or do any partiality to anyone of us. This is called the Mother Nature & this remains the very essence of our origin & someday we will be disappeared in it. There is only one theory that counts here which is, "as you sow so shall you reap". It's important to note that irrespective of our beliefs, this Mother Nature provides us the necessities of life like the water, air & food. And so, if any belief who disrespect or shows the bias attitude towards with the other human being or any other entity can't be the true religion.
If we can imagine the life with no boundaries with a respect to others will perhaps lead us to live a smooth life including creating more satisfaction within us.