Sagres that is also interesting especially with regards to breastfeeding and breastmilk. And of course it makes sense that a frequently waking baby is more protected as it is more closely attended to.

I've often wondered though why such a high functioning, big brained mammal such as a human produces low protein, low fat milk? It makes some sense if it is to keep the baby waking frequently and to maintain milk supply but on a developmental level wouldn't humans theoretically need higher protein/fat etc?
It is actually the smaller animals that produce high fat, high protein milk.

Calories in breast milk: Nutritional information

According to that article, protein is an indicator of growth rate, and higher protein milk is found in animals that cache their young.

I was suprised too when I learned how relatively low fat, low protein breastmilk is. Maybe it's something to do with our low fat lifestyles.