This is a bunch of "facts" that reflects your experience as a television consumer.
Religiosity does not predict odds of committing homicide. Domestic violence is indicative of higher risk, but "always" going to murder is an absurd extrapolation that isn't statistically backed up. My ex liked hitting me and throwing things at me, yet here I am.
I've no idea what you're on about with making this a class issue. Rich people are just as likely to kill their spouses; they just know how to get away with it by outsourcing.