I keep seeing people getting upset about how in the end, we still dont understand why the demons appear or why some people are getting hellbound. But for me, THAT IS the exact message of this drama. Everyone in this world is so desperate to find meanings from things that happening to us so we turn to religion as it gives us answers about the universe and how the world works. You can believe it all you want, but in the end of the day, no one really knows what's the REAL truth, so NOBODY has the right to judge god's intention and it's okay cuz we are humans, we arent supposed to know everything about the universe. That's just how the world works. Just like what the taxi driver said in the end, we humans, are responsible to take care of our world, doesnt matter what religion you are or what you believe in. We should take care of it together and live in harmony..