Man's creation of 'God' [in whatever flavour] was a long-standing attempt by him to find answers to the unanswered.
Fear of the unknown and more importantly fear of his own mortality and therefore insignificance demanded the existance [creation] of a superior entity to provide a breast at which to suckle....following the 'adult' separation from the mother [the erstwhile 'God' to a child].
Man's self-importance has always been to his undoing...and perhaps this 'superior entity' is a way of restoring a sense of relevance or balance....where the likes of Alexander the 'Great' can be humbled in the minds of the masses by a God the 'greater'.
I don't care for pidgeon-holing people with 'creationist' or whatever.....what I do believe though is in man's capacity to 'create' in his own mind the appropriate 'tools' with which to survive in an hostile environment. In this case, a God came in handy as a palliative, just as a gun comes in handy as a threat suppressant.
So...to sum it up....Man created God....and through his insufferable ego created many permutations thereof, as each egotistical bastard demanded his 'creation' was superior....so we have Christian fighting Moslem, Catholic fighting Protestant....ad nauseum.
The Religious 'flavours' under which people congregate....whether it is the Peoples Front of Judea...or those bastard splinter group the Judean People's Front are simply the 'opiate of the masses'...mob mentality orchestrated for nefarious motive that has probably been forgotten over time.
If people would just create their God and allow others to create THEIR versions too the world would be a better place.
Think about it.....our current world racked by terrorism is all down to mass-mentality religions whose tenets are mutually exclusive and a lame excuse for war.
With tongue in cheek....come the revolution I'd have every organised religious leader shot. They are a blight on society....