John and Dave both know right from wrong. John discovers that Ben plans to kill 100 people by means of a suicicde bomb, and is about to do this. All John can do to stop this occurring is to shoot Ben dead. With those facts alone, Dave thinks John is a homicidal maniac. Obviously, that opinion will be changed as soon as the facts are known.
With God, the difficulty many have is that they will never have the big picture - at least, not until it's too late to respond based on the big picture. And many people won't accept the pieces of evidence that do exist for God because they don't have all the facts, and/or because they weigh up the evidence for no God and consider it much greater.
And that is everybody's prerogative.
It's true. We human beings can't see the whole picture. But if we can excuse God from refusing to stop an evil act, because he sees the big picture, then, we human beings should refuse to stop an evil act because we can't see the whole picture. if we intervene, and stop an evil act, without knowing what trick God can pull out of it, then, we might have neutralized the great good that God was going to bring out of the evil act.