This goes right back to time saving habits of the high value person (man/woman).
Compare with the bitch shield, it is a tool to save time by not caring for people who does not have high enough value to help her S&R value.
The not giving a shit attitude is a male equivalent to the bitch shield. (Only for us it starts out as just a faked attitude but later on really becomes a time saver.)
Ok, so we got/(wanna fake) choices. Why would we care about everyone and anyone? The fact is, we dont, we just care about the ones that have a direct impact on our S&R value. (Yes Im an asshole but it is true to a certain extent that varies from individual to individual.)
Protector of loved ones means exactly that, loved ones, you do not get my protection unless you have a value for me.
People we normally care about:
Friends/Family: Impact on survival value
Collegues, teachers, bosses: Impact on survival value
Wings: Impact on both our survival and replication values
Targets: Impact on our replication value
AMOGs: Negative impact on both values

BFs: Negative impact on our survival value
People we do not care about: Everybody else
When we have got our lives together (I hope most of us have) we can care about the wellbeing of the people around us. Third world children, the less fortunate etc. But in reality most of us do that just to feel good about themselves. The reason that we do not care more than we do is the same as a bitch shield, we do not want to invest time and resources (money energy) in something that does not potentially give us anything back in the near future. I wish the world would be more caring and that more people should care more about the less fortunate but unfortunately this is reality.
So finally, the point of this post... Here is the list of people we care about from most important to least important.
Ourselves
Our inner circle
Other people with an impact on our S&R value
The less fotunate
The rest (they do not need anything, do not bring you anything, why care)
Ezo