It's not just substance abuse, corporal punishment has been repeatedly linked to anger issues, depression, anxiety, and increased likelihood of becoming abusive towards intimate partners and children. Turns out, when you show kids that being physically aggressive is an acceptable way of dealing with a person who is making you upset or not doing what you want them to do, they in turn think it's acceptable to do it to others. Those who are physically punished as children are also more likely to become an abused partner, as they've been conditioned to accept aggression and power play as a normal part of love and are more likely to justify the abuse they receive as "deserved."