Creation Moment 3/10/2012 - Big Bang BOOM

How can sommething come from NOTHING? The Big Bang states that a small cloud of subatomic particles (where did that come from?) exploded forming hydrogen and a little helium. Let us say for the sake of argument it is true. Why did it then explode for?
Also, from experience, we know that EXPLOSIONS are destructive and lead to destruction and disorder. So then how is it reasonable to believe the opposite happened during the big bang?

In the beginning God created the heaven and the earth. Genesis 1:1