But my answer may be different from yours, and from the next person's. And many people who disagree with each other will be basing their ideas of good and evil on what they each believe God wants them to do.
My personal belief is that there is good in the world because people have a belief in God (and others) and/or a belief that, for them, it is more profitable to do good than evil.
Good and evil are both subjective concepts, and hotly contested. Even when we agree on what they are, they are both found in all sorts of people and situations. Good and evil are hardly suggestive of the existence or nonexistence of a literal God, although they might be the same as the metaphorical God that I think Nietzsche was referring to.