Life: a mystery itself

"Life itself is a unsolved mystery"
Various kinds of questions arises in my mind when I start thinking about the universal truth of my life. Till now i have came through the truth of my birth and one day may be sooner or latter death will overcome the truth of my birth. Not only about me but its the truth about each one of us.
Everything which is going to be happen depends on our destiny, sometimes our destiny gives us what we aspire and sometimes it betray. Life seems to be like a roller-coaster ride with lots and lots of ups & down.Through the journey of life blessed moments are always with us but at the same time tears are also a part of the journey.
What LIFE is????
Life is all about birth & death.
Or
Life is all about our destiny.
Or
Life is just like a drama, where each one of us are acting their own roles
It seems that the question doesn't have any appropiate answer.Different peoples give different views on it.
Many Questions arises in my mind What is the unknown truth about our life,the truth about every creature of this world, the truth about our destiny, the truth behind our creation.
Their is always a very obvious answer to my every questions.
GOD,,, the mighty one, the one who is behind every truth.
many peoples belive god and believes that his sovereignty controls everything in our life and everyone of us were created with a specific destiny. We belive that nothing happens unless God wills it. But is it true? God has given us the right to make our own decisions and choices. He might have predetermind any plan and purpose for every person's life. Now the question arises about the existence of God,if god exist, why can't we see him? Do really god have supernatural power to rule our life or we are just like the robots.Everything about us, our talents, the way we look, we think and even the way our life goes all depends on the mighty one.Yet their is much confusion about faith in God, as no one have ever seen him. But at the same time when the question is about God we have to belive things we cannot see. We haven't yet seen God or the Devil, the hell or the heaven but their is always a believe in our mind that god exist. We always call God when we are in a problem. How can we beleive things which we havn't seen but still we have a faith in our mind.