Thank you for that Eastern point of view. That's interesting.
If people labor under the misconception that there is no hell, no witness to their acts, that no one knows, sees, or takes note - then, if they have no conscience, they will become less than animals.
We see this around us full blast. The fear of hell is not the most spiritual or religious reason for behaving properly, but it is necessary to keep humans human. A higher or better reason is to act in a way to please God - but to get to that point, a person has to at least refrain from serious vice. The false idea that everyone gets the same results, no matter what they do or how they live, or that there is no reaction to anything they do, is an extremely dangerous fallacy.
You reap what you sow - a basic law of the universe that no one can escape from or argue with, no matter what religious persuasion, belief, or lack of belief.
Just because someone may think God doesn't exist, therefore He doesn't exist. Millions of peoples' disbelief in God doesn't affect His existence.