Retribution

This article in the Washington Post is about people who actually think that Hurricane Katrina was God's retribution for doing anything and everything they don't approve of, from abortion to homosexuality. What I want to know: Why do these people never think these things are divine retribution for things they're doing, like voting George W. Bush into office or protesting at abortion clinics? I mean, have we ever heard of anyone saying: "I used to vote Republican, but then the hurricane came and I heard the call of Our Lord and mended my wicked, wicked ways." Honestly.