Existence of God

What proves the existence of God, the unseen omnipresent force? 

I would say, the presence would be proved by the non-availability of answer to a very simple question. A child is born out of the union of a man and a woman. The how was the first child born? Who designed evolution? It is a paradoxical situation when you think about it. You need to have a woman first to create the first man on earth through the process of reproduction. But that woman will still need a man to complete the reproduction process. It is the typical what came first - the egg or the hen question. But only that this contains a deeper mystery as it concerns us and our understanding of our Creator. 

Evolution of life only explains how single-celled organisms became multi-celled and then dinosaurs, reptiles, mammals, primates and then humans. This only explains the biological process, but not how these subtle design changes were introduced, and how the environmental factors were made conducive to facilitate such an evolution. All of these needed external triggers in controlled measures that needs the presence of an entity that handles it. That would be God.