It looks like since Port Arthur arson has been the method of choice for mass killers in Australia - 3 separate incidents in which 10 or more have died. Time to ban matches and lighters!
I think you'll find that in those cases we reacted by tightening laws on fire sprinkler systems and construction. Some policies in nursing homes have changed too.
We don't just ban things, we try really hard to fix them. In the case of guns, that meant restricting access to only those who can prove both a need and some competency. Crazy, eh?
If Australians felt strongly about some selfish right to arm themselves to the teeth, then we have political parties that should be polling a hell of a lot better in elections. Go figure.