IF God omnipotent why stuff in the world?

Because people like you are luring people from the truth that God is omnipotent.

Okay time for breakfast, I took care of that :)

Since then I have spent well-nigh fifty years working on the history of our Revolution; in the process I have read hundreds of books, collected hundreds of personal testimonies, and have already contributed eight volumes of my own toward the effort of clearing away the rubble left by that upheaval. But if I were asked today to formulate as concisely as possible the main cause of the ruinous Revolution that swallowed up some sixty million of our people, I could not put it more accurately than to repeat: Men have forgotten God; that’s why all this has happened.

SOLZHENITSYN