I am concerned that it appears some don't think it is a big deal, if CW "only" killed his wife and his son. Personally, I have no doubts that he also killed his daughters. But even if I am wrong about that....we DO KNOW that he confessed to killing his wife INTENTIONALLY, and that would have been with full knowledge he was also killing his son. PLUS what he admits to doing to their bodies afterwards is a crime in itself. So we do know squat, and squat is very very bad.
If someone breaks into your house, and you have the chance to shoot and kill them, some people would. Someone kills your kids, some people would kill the person that did it. IMO