I've never struck a woman in my life; I'd have to say it's not really something that it would occur to me to do. If memory serves me right that one occassion was the only time my wife ever struck me and I found it more amusing than threatening. I never saw her strike our daughter (that tongue, though, pheew) either.
I'd tell you how that argument ended, but it's a little personal. Suffice it to say that there such a thing as make up (that's personal).