Wish I didn't think laws like that were a good idea, but after dealing with the ex-wife's psychotic episode and threats to kill our child I did some digging and discovered that maternal infanticide is terrifyingly not as rare, and that it's generally not counted as "murder" for statistics purpose (many countries have separate statutes which cover it).

Over the course of your life the people most likely to kill you are: yourself, your mother, your father, some step parent, some random person. Though if you make it to 5-6 years the parents stop being as big a threat.