Without 'Belief' human kind might have been an uncontrollable beast..
Belief is what makes a human a person. The definition of a person would be in the 'belief's' he has.
Belief characterises a person's character, determines his identity and shapes his destiny.
Everything that has been constructed or has been destructed has one common thing, the belief of the doer. The doer believed in what he did.
Different humans will naturally have different beliefs. All seems well, until the different beliefs infringe upon other's belief's and clash with each other. However noble or divine or perfectionist the belief's might be, the clashes make them seem ugly and rotten and useless and absolutely imperfect.
It would be idealistic and Utopian to have a 'Belief' that there would be a world order, wherein humankind will have a common belief and better sense would prevail in humans which might help them to live in 'harmony with each other'.
Belief, until that time will have different forms and we need to wait for 'that' Utopian scenario, when all will be held together under an umbrella of a common belief.
It would not be wrong, to say human kind started with having one common belief and when there were aspertions cast upon it, then migration away from that belief would have happened, which led to more diverse belief's and ultimately concluded in having altogether different and contrasting belief’s.
But that sort of a conclusion is not an end in itself.
Humankind is again moving towards a common belief, since that would be the product, of transforming the world into a global village. As communications increase and indifferences cease, a common belief will take shape and that would be the UTOPIAN society we are looking forward to. But such a thing, will again be a temporary situation, since humankind will again evolve into finding newer pastures, probably out of this earth and forming newer beliefs.
UTOPIA it can be said,
more than being an Utopia,
is a temporary situation,
to give birth,
to another hope,
of another Utopia,
as he continues to evolve,
in his insatiable quest,