The more complex our society becomes, the more mistakes we will make during our lives. Well, we can get some idea from a thought experiment of what would happen in an office with a tyrannical boss that will not tolerate the slightest mistake. If you make a mistake, your first reaction is to hide it away. If your mistake is discovered, you want to be able to blame somebody else so that the blame won't fall on you. The maximum allowable penalty is applied for each occurrence.
Any repetition is unforgivable.
We reach this conclusion based on an entirely secular and logical evaluation of the needs of our social order.