you own a car? use toxic cleaners in your house? Ladders? stairs? now shake in terror as you look up those statistics
See, for example, Azrael and Hemenway (2000, In the safety of your own home: results from a national survey on gun use at home, Social Science & Medicine, Vol 50, pp 285-291): "Our results suggest that, in the home, hostile gun displays against family members may be more common than gun use in self-defense, and that hostile gun displays are often acts of domestic violence directed against women" Of course we have to be careful to make general remark over those with gun preferences. There are likely to be some selection bias at work. Sorenson and Wiebe (2004, Weapons in the Lives of Battered Women, American Journal of Public Health, Vol. 94 Issue 8, pp 1412-1417), for example, finds that handguns "are more common in the homes of battered women than in households in the general population"
So I guess I should do the whole world a favor and stock up on M4A1's and a few MP5's since I'm willing to bet that they have caused practically zero issues in private homes right?
A shotgun loaded with buckshot will penetrate at least 4 walls of sheetrock. http://www.theboxotruth.com/docs/bot14_3.htm