We know that Christians generally go through ridiculous mental voodoo to explain why a benevolent God allows human suffering, and none of it makes any sense, or is filled with bunk logic. That's what happens when you try and retrofit a Jewish "God is good and evil" religion into a benevolent religion.
One of the biggest "trips" to a JW/Christian in continuing this line of thought is asking them why God would create animals simply to suffer and die, then, after they try to blame everything on Adam (whose brain God supposedly created, and who put him into the exact situation that had an influence on that brain to cause him to sin). Answers and their rebuttals include:
- Animals didn't kill each other in the Paradise - sin messed that up.
*There is TONS of evidence that dinosaurs killed, fought, and ate each other, and they still suffered and died in painful ways even without that.
- Animals don't think and work on instinct unlike us superior humans.
*Any pet owner would tell you that's idiotic. They feel, have emotions, predict pain, avoid pain, etc. on various levels. They recognize "self." Apes, dogs, dolphins, pigs, and other animals "feel" on a level close to humanity. The "animals are stupid robots" idea has long been phased out.
Then, if you want to REALLY attempt to hit home, ask them, "In fact, knowing that animals suffer, why do you EAT them and add to their suffering?"
- God told Noah he could eat animals.
*So why would God ADD to animal suffering on top of what they already experienced by creating one more predator for them? Why would a loving God cause suffering like that?
You will never, ever, not get a blank stare where you immediately see the cognitive dissonance breaking and them walking away. In fact, in JW land, this is one of the easiest ways to get someone to stop talking to you - as it's something they encounter on a day to day basis and can't really reconcile. It generally bothers them to come to this realization, so they think that this "bother" is coming from the Devil as opposed to their natural logical senses seeing an obvious contradiction.