The information was kept hidden for the same reason we keep matches from children. In the correct hands, fire can provide illumination... but in the wrong hands, fire can be highly destructive.
We are creators, and yet we naively play the role of "the created." We see ourselves as helpless sheep buffeted around by the God who made us. We kneel like frightened children, begging for help, for forgiveness, for good luck. But once we realize that we are truly created in the Creator's image, we will start to understand that we, too, must be Creators. When we understand this fact, the doors will burst wide open for human potential.
Medicine, electronic communications, space travel, genetic manipulation . . . these are the miracles about which we now tell our children. These are the miracles we herald as proof that science will bring us the answers. The ancient stories of immaculate conceptions, burning bushes, and parting seas are no longer relevant. God has become obsolete. Science has won the battle.