Anony Mous: because if you read it from the JW perspective, it is indeed horrendous.
I agree. They treat it as a literal story, and it really doesn't work as a literal story. I also think it doesn't work if we make certain assumptions that are based in a modern Christian understanding, such as the Devil being evil or the personification of evil. Or Yahweh being infallible, pure, or perfect.
If we read the story as a fable or moral lesson, and view the Devil as a counselor instead of a force of evil, it makes a lot more sense. In this version, God isn't necessarily boasting to Satan about Job; he is asking what he thinks of his (God's) decision to protect him. When the Devil points out that this skews the situation, Yahweh is agreeable to having Job put to the test. They are not in opposition as much as they are working together.
In the context of a fable, the many deaths and the loss of livestock is not as jarring. It's just 'movie violence.' The reaction of God to Job's expectation of an explanation also makes more sense. Sometimes, bad things happen to good people, and there's no rhyme or reason to it. Expecting a chaotic world to make sense is potentially counterproductive. God is as much an agent of the universe as he is its designer.
When we define god in the Christian sense --all-powerful, all-knowing, all-good, etc-- the story takes on a much more sinister tone. A being in such total and complete control shouldn't be acting as if anything is out of his hands. Which means that everything that happens --including everything that goes wrong-- is a deliberate decision on his part.