Stealing is wrong. It encourages lawlessness and revenge. It deprives workers of their hard won rewards. It enables the successful thief to pass himself, his wife and children off as morally superior to those from whom he has stolen.
It is easy to snatch goods or coin from another. To completely ruin him is even easier! To do that, you need the help of the victim! He has to be induced to part with all he saves! He should do this for ten or even twenty years.
For that the thief needs to own or direct a bank. That requires the complicity of those who pass laws.