At first glance this proverb seems a little severe. Who would rob his father and mother - and then assert that he had not sinned. Yet this proverb is lived out again and again in our cities and towns as children wnat that their parents have - and resort to robbery and even destruction to obtain it.
I had the sad priviledge of watching my mother's family almost disintegrate due to a dispute about the inheritance and the dividing of furniture and possessions when the homestead was separated to the children. This is one of the ways that this proverb is seen in our world. A greed for and a sense of entitlement to a parent's wealth will lead children to do horrific things to their parents. Lizzie Borden killed her father and step-mother by hacking them to death with an ax. This unfathomable action took place because Lizzie and her sister feared that their father was about to change his will and keep them from his riches, which they had wrongly assmed were theirs. In this way we see that this kind of greed which seeks to steal what belongs to father and mother is a companion of a man who destroys.
The other way I see this passage fulfilled is in our current drug culture. Those who get hooked on drugs will do anything to get them. They will even steal from their parents to get their next fix. Often, when confronted about their behavior, the drug addict will bitterly state that they should get what their parents have - even absolving themselves of responsibility of stealing from them. The booty they take from their parents is then poured down a hole as they buy more drugs and exhaust what they've stolen on another temporary high. Following this sordid path has led to numerous overdoses by these drug enslaved chidlren. Their robbery leads to their destruction.
The wise man knows that two of the commandments of God are to honor one's parents as well as not steal. When they ignore these commandments and do as they see fit, they put themselves on a path toward destruction. Sin in David's household led to such a demise for Absalom. Embittered over his sister's rape at the hands of a half brother - he felt he had a right to first kill his brother - then to steal the kingdom from David - then to rape 10 of his father's concubines in front of all Israel. His last act of rebellion was to gather an army which he himself led to find and kill his father. All the robbery of this bitter young man was a companion of what would eventually destroy him. Caught in an oak tree by his own hair - hanging between earth and heaven with his failed attack falling apart all around him - his life ended with a man thrusting a spear through his heart. Oh that we would learn from such horrific cautionary history, and honor our parents. Our parents are not perfect - but they are ones God has given us to teach us ultimately to honor Him. To do otherwise is to put yourself in a direct collision course with the one who will destroy your life. Therefore learn to bless and not curse your parents. If they have failed you in some way or another - learn from the grace God has given you - and love them with affection born of mercy.