In case it needs stating, watching your child die in increasingly agonising pain over a year while your glimmer of hope for their survival dimishes every single day, with moments of false dawn, is a very different experience to watching your child being killed by a wild animal.
As for your imaginary hunter gatherer:
1) Yes I'm sure when a child died in agony over a prolonged period of time in hunter gatherer societies, their family was also traumatised.
2) The modern nuclear family has changed our sense of emotional attachment to our children. Whether that's good or bad is a separate discussion, but our relationship with our children is different to what it was 500 years ago, let alone 5,000 years ago.
As for your imaginary hunter gatherer:
1) Yes I'm sure when a child died in agony over a prolonged period of time in hunter gatherer societies, their family was also traumatised.
2) The modern nuclear family has changed our sense of emotional attachment to our children. Whether that's good or bad is a separate discussion, but our relationship with our children is different to what it was 500 years ago, let alone 5,000 years ago.