Is God willing to prevent evil but not able?
Then his is impotent.
Is he able, but not willing?
Then he is malevolent.
Is he both able and willing?
Whence then is evil?
Is he neither able nor willing?
Then why call him God?
This line of reasoning has been echoed by many throughout history, but it hinges on a mistaken premise. It assumes that a good God would not allow evil to continue. The reasoning underneath that premise goes like this:
1. We cannot think of any justifiable reason why God would allow suffering and evil to continue.The logic does not follow. Why should there be no reason just because we cannot think of one?
2. Therefore, God cannot have such a reason.
Alvin Plantinga writes in Warranted Christian Belief, "Suppose the fact is God has a reason for permitting a particular evil... Is it even likely that we would wind up with plausible candidates for God's reason?... Given that he is omniscient and given our very substantial epistemic limitations, it isn't at all surprising that his reasons... [might] escape us." Plantinga also notes in Philosophers Who Believe, "Why does God permit all this evil...? Christians must concede that we don't know. That is, we don't know in any detail. On a quite general level, we may know that God permits evil because he can achieve a world he sees as better by permitting evil than by preventing it; and what God sees as better is, of course, better. But we cannot see why our world...would be better... or what, in any detail, is God's reason for permitting a given specific... evil."
In other words, if we have a God great enough to be angry at for not preventing evil and suffering, we must also have a God great enough to have a reason for allowing evil and suffering we cannot discern.
Moreover, if there is not God, people don't really have a good basis for being outraged at the existence of suffering. After all, nature is "red in tooth and claw." Death and destruction are perfectly natural. It is perfectly natural for the strong to eat the weak and "survival of the fittest" is a genetic principle. Someone can only object to injustice if they already believe in some kind of "supernatural" moral standard (i.e., some standard that comes from outside of nature and which judges some types of "natural" behavior as wrong). And where does such a supernatural standard come from if there is no God?
As I've said before, eliminating the God of the Bible because of the problem of evil does not do away with evil. It eliminates the only real solution for it.