Children at risk from stepdads
Allowing the biological father to raise a child “virtually guarantees the child won’t die”, but substitute the father for another man and you risk harm to the child.
Taking under-five child homicide deaths from 1991-2000 fathers and mothers are almost neck and neck but defacto relationships are almost half that again (possibly due to no real bonding).
I find it interesting that there is no mention of step-mums.