Wyatt ~
Gently, gently. Calling people names is uncool on TFL, but thanks for coming to my aid.
WildAlaska ~
The statistics kept by the US DOJ do not distinguish between "stranger" invasions and "acquaintance" invasions, so I can't answer your first question. Nor can I tell you how many of the victims were drug dealers or involved in other at-risk behavior when their homes were invaded.
What I can tell you is that around one-fifth of all assaults happened in the victim's own home, and that one-third of all completed robberies with an injured victim happened in the victim's own home.
As for the rape statistic, I agree that stranger rape is a really, really unlikely event. Certain categories of women are more at-risk for rape (just as certain categories of people are more at-risk for home invasions). Younger women are more at-risk than older women; city dwellers more at-risk than those who live in the country; single women are more likely to be attacked than the married. And so on. Some demographics have virtually no risk of getting raped, statistically speaking.
Nevertheless, if this very unlikely event does happen to a woman, there is a fairly large chance that where it happens will be in her very own home. That 42% figure means that home is the single riskiest place for a woman at risk from stranger rape.
To me, all of the above means that it isn't at all paranoid to carry at home. Although most people feel safe in their own homes, home is not always the safest place to be.
I should add that if you worry about attacks in your own home, good locks and good lights and good neighbors and a good dog will do more to dissuade criminals than a gun in the pocket of your bathrobe. But the statistics show that getting attacked in you own home is significantly more likely to happen than getting struck by a meteor, so it is hardly "paranoid" to be prepared to cope with such an event.
pax