An appeal to reason works with a few, and an appeal to self-interest with most. But then there are the hopelessly recalcitrant for whom only the appeal to force is effective. The only argument that reaches them is the argumentum ad baculum. Herein yet another reason to uphold Second Amendment rights.
Those who call for the repeal of the Second Amendment not only fail to appreciate its importance but also vastly underestimate the difficulty of actually repealing it. On the latter point, see Charles C. W. Cooke.