> narcissistic people who were utterly twisted by their caregivers as children

Please don't be too quick to blame parents - remember we used to blame autism on refrigerator mothers: https://en-wp.org/wiki/Refrigerator_mother_theory -- society tends to victimise mothers and without knowing the people involved nasty stereotypes are unhealthy.

Mayo clinic says:

  Although the cause of narcissistic personality disorder isn't known, some researchers think that overprotective or neglectful parenting may have an impact on children who are born with a tendency to develop the disorder.

That is: parenting can be a cause but please don't jump to the harmful generalisation that parenting is always the cause.