When their addiction becomes overwhelming, they typically turn to theft and on occasions, assault. Once they buy their drugs, they return to the sweet faux-comfort of their perpetual misery. Their temporary alleviation from their turmoil. One way to address this situation is to force a junkie into reforming their life. You can arrest them, send them to a drug court, mandate rehab that has to either be funded privately or publically, and hope it sticks.