Why do they think "If there is a god, why is there world hunger, cancer.. etc.." Why do they think everything has to be perfect in this world for God to exist? Of course its not. We do things, we suffer the consequences. Of course people with cancer did nothing to deserve such a thing, but the sciences can explain that its passed on in the family. Just like the sciences can explain how we were created. God didn't cause world hunger, greed did. God is letting us ruin the world with our selfishness and greed because we all have the ability to do what we want.