Aurore Martin and Peter Uwe Schmitt killed their spouses in 1992-5 and collected £680,000 ($897,000) in life insurance! The "Honeymoon Killers" didn't get away with murder forever but they proved that some of the money collected for life insurance rewards murder, yet there's no debate about finding out how often it happens or how to prevent it! Perhaps because discussing that might reduce profits for insurance companies!