If u believe, God is there and if u don't then there is no God. There is no any scientific proof about the existence of God. If u believe the books written in olden times, then there is God and if u don't, he is not. According to me, God exist. It just simply depends on the person but there is a supreme power, no one knows where and in what form but it is. There is something that controls the whole universe. If u have have faith miracles happen and if u don't have, you will not observe the miracles happening every moment around you. As my life, its full of miracles. I just observe, smile and thank him. Its a great pleasure experiencing and feeling the love and presence of God.