Both firearms and crackers are handy and enjoyable things in the hands of responsible people.
The basic problem is, there aren't enough responsible people - and there's very often little oversight of who has adequate responsibility to possess either item.
Crackers were banned in W.A. when I was a teenager, and that was nearly 50 yrs ago.
We don't miss the sizeable numbers of terrified and burnt dogs, who had crackers tied to their tails for "fun".