It almost sounds too good to be true. So good, in fact, that it couldn't possibly last for very long. It sounds like the most perfect of ideals. Moral people today hold out that pristine moral purity as the future goal.
Understandably, such a state is to be desired, and no criticism is intended of its perfect qualities. What is difficult to understand is how such perfection could have existed.
Children have to learn not to throw tantrums and to not think that they're the center of the universe. It is their natural state. Can you imagine what a sinless infant would be like? I must admit that it is difficult for me to do so.
What if we were all born with a natural inclination towards evil and an inclination to good moral behaviour was a learned and conditioned response?