What if we're not the only "earth" Jehovah has created. What if He wants us to take part in the creative process ourselves?
If Jehovah could just "speak" worlds into and out of existence, why would He need us? Why would He need angels? What does being a "co-heir" mean? And why is God in our image and vice versa? (In other words, why does God have a head, hands, feet, nose, ears, etc.?) If Jesus is in the image of the Father, then why does the Father have all these attributes? Why would God need to look human, and why would we have to be resurrected in such an image? If there is a "heavenly class" as the Witnesses contend, why would they need to look human as well?
If anyone's going to rule, they're going to have to have someone to rule. If everyone gets to be a manager, doesn't it seem fit that there would need to be those who needed managing?
Perhaps they have an answer...I dunno. Their theology doesn't seem to be too complex. I can't imagine being in the earthly class and having nothing to do all day but tend the animals and eat vegetarian.