What if the person who stole it doesn't want to give it back? What if that person has their own group of friends-with-weapons? We now a standoff between your p

What if the person who stole it doesn't want to give it back? What if that person has their own group of friends-with-weapons? We now a standoff between your private army and someone else's. Seems like an extraordinary inefficient way to achieve justice. (And, one that will likely end up being quite deadly for all parties involved.)