For me God is just a human invention to control and hold power over other humans. Only problem is you have to really think about it and stay focused through the religious bullshit to see that.
I saw it mentioned that Allah is tooted as the one true God by some religion. I grew up Catholic and that's the same story they had, only the God had a different name, er, God..
Since the concept of God has been around for roughly 5000 years, and since you have to first change their Gods to change the thinking of the people, I think Gods will continue changing for at least the next thousand years, before humans give themselves the proper credit for things, and are able to forsake violence of their own free will.
Where have all the young men gone? Long time passing
Where have all the young men gone? Long time ago
Where have all the young men gone? Gone for soldiers every one
When will they ever learn? When will they ever learn?