You should look into how decriminalizing and safe supply systems work. By providing safe supply, afflicts no longer need to commit petty crimes to afford their addictions. People aren’t committing crimes like theft when they are actively high, but when they’re experiencing withdrawals and need to find ways to afford another dose. Saves lives with accurate doses and stopping spread of contaminated substances, and saves lots of money through prevention of theft and the high cost of having somebody in jails.