If god is not all powerful, then he cannot be god. There is no logical reason to believe in the man in the sky.
Without meaning to cause offence, the "science" you quote is not science, it's similar to Ken Ham's style of pretending to say something scientific.
For science to prove god, there would need to be hard proof that could be tested and a god hypothosis that could be proven.
Did you forget about the devil? There was a time that the devil was good. God had given the devil free will because of the joy of it. God gives joy. But the devil misused the joy and the free will, turning himself into THE destroyer (Abaddon and Apollyon of Revelation).
You talk about human tragedies like it is God's fault. If God hadn't sent Jesus into the picture right when Adam and Eve fell, this whole universe would be gone, starting right then. God sent Jesus to save us. This whole operation is far more complex than understood. After all, if you are going to talk about tragedies, what about death itself?
God owned it all. The devil usurped some of God's power. God corrected things in the best way. There will be a new universe (Revelation) where none of this one will ever be remembered or brought to mind (Isaiah).
The simple point is, where will you and I go from the resurrection? Life or destruction?
If you don't want to accept the hard proof of Newton's 3rd Law, I can't force you... don't even want to. Neither does God. But the proof I show is only the tip of the proof. Go through MakingMoneyHoney's posts from about a weak or two ago where she shows all kinds of links to all kinds of additional proofs for God, or Google for the sites.
With regard to the existence of God, science that suggests that God doesn't exist is very lame.