Part of the Watchtower's response to theodicy -- the problem of why an omniscient, all-loving God would allow evil -- is that Adam and Eve were given free will and chose to exercise their right to disobey God, hence bringing sin, evil and death into the world through their genes (of course the genome has been mapped and no evidence whatosever for that idea is established, but I digress).
Let's look at this problem of evil a little more closely. A common objection to the JWs is "Why didn't God just create Adam and Eve so that they would not sin and, hence, there would be no evil?" A good question indeed! The Watchtower's response is that Adam and Eve had "free will" endowed by Jehovah and if God created them so that they were incapable of sinning they would not have had free will. Does this make sense?
It does not. Think about it: according to the Watchtower (and many other conservative Christian groups) God has both free will and will not -- indeed, cannot -- do evil. Why couldn't God create a perfect creature "in his image" which has both qualities in the same way He does -- both free and be morally incapable of doing wrong?
I say again:
God -- is incapable of doing wrong but has free will.
Man -- would not have free will if he was incapable of doing wrong.
That logic just doesn't add up.
Bradley