The father fits the profile of what the FBI terms a "family annihilator."
He's been struggling financially for years..hasn't worked..couldn't take being branded a failure had in his mind had to "rescue" his wife and kids from HIS failure." Stupid SOB should have just shot himself.. let his family have the insurance $$
I wondered about all the jobs he has had in the past. He didn’t stay at any of them for very long. That would make sense!