The question of if god really existed bugged me for some time, the god the OT NT quran etc. I think the key is to study human nature, we are very shallow short sited and self destructive people but we are filled with intellegent design, I think the first human race asked these same questions and started making stories up that later turned fact, a man smarter than the average(but still very stupid) sold religion to inslave his tribe... and so did other tribes with their gods.
You read into ancient history, all the conquering, religion wars and civil wars all have this ingredient that is religion, religion is what made us become nations and nationalists but we all are alike, we all deserve the same but there is hierarchy, people die of disease and hunger will other grow fat.
The irony that I see here is we are saying exactly what other people did far far back and then created something of nothing..a concept.
If you want an answer study yourself, study human nature, study ancient history and its relation to religion like Greece Spain etc. Maybe some day everyone will put down their guns qurans and bibles and face the real issues that are plaguing us.