But one cannot say that in regard to evolution. The greater good of evolution, one assumes, would be the creation of many sorts of life forms.
For what its worth, I was thinking of a different greater good. Not a greater good that we can observe but some grand greater good that extends beyond this mortal coil. Some greater good about the way paradise inherently functions. I couldn't give you details on that of course, but it isn't difficult to imagine that they exist. A random idea that struck me was the idea that suffering exists and that we suffer so that we know what suffering is. Why? Perhaps it makes an existence without suffering truly paradise.
Basically, God can do something that appears cruel to us on earth, but in context of eternity is for the greater good.