"People rarely commit robbery and murder to get another hit of alcohol."
This is mostly because shoplifting is a thing, and possibly because you can do things like steal from family and your food budget can generally keep you drunk enough that you don't care if you eat. Vodka can be really, really cheap.
Addicts with enough money to afford their addiction rarely commit robbery or murder, by the way, as evidenced by the politicians, entertainers, and sports players that wind up having addiction issues. Small towns still generally have low murder rates, and have addiction.
I'd argue that folks rarely commit robbery and murder for their other addictions, too - we just hear about them on the news, the same one that draws attention to things that hook into your fear and sensationalizes it. In any case, I'd need sources to see if it is really a cause in anything but a tiny number of addicts. I'm guessing more get caught for public intox or possession.