Because you care what we think about you and your posts and you are tying to be diplomatic ?
There is no human alone.
Someone needs to teach babies how to eat, walk, drink and poop or they will die.
When humans started working with the people next to them they built towns and history started.
When they started to write so they could work and learn from people dead or far away they made more progress in a few centuries than in the tens of thousands of years before.
When we invented printing the renaissance boomed,
the telegraph everything sped up again
Internet, we could work and learn from anyone, anywhere from any time in history we skyrocketed again.
Even the loneliest hermit learned to walk, drink and pee from his mom or dad and needs food, paper.
You take a modern man and put him alone in the desert he is back to the stone age and might die. If they are many they will build a village worst than what our ancestors had during antiquity.
Because we have desires and needs, we have a purpose, we want wellbeing. We cannot achieve it alone. The human consciousness is small, we need to specialised and we have culture so that we can store all this progress, knowledge and wellbeing collectively. It doesn’t work alone.
Civilization is why we have all this wellbeing, comfort and happiness and tribal people in the amazon try hard to integrate and stop living in poop and diseases. The savages want clothes, medicine and food. The ones who don’t come out are just afraid because they don’t trust the modern people.
If anything we should care more about other people, concern ourselves with their wellbeing so that we call all achieve what we can’t alone. If we don’t care about each others, no trust, no cooperation, no social contract, no progress, no incentives to stay together.
If we don’t know others, we don’t know ourselves, if we don’t know ourselves we don’t know others and everyone remain strangers. We are reflections of each other.
This is our advantage as a species, this is why empathy is crucial, this is how natural selection made the best out of us.
This “I don’t care none about what these people think of me” mindset is a problem. We need to be able to take criticism and deal with conflict without shutting others down or tuning out mentally. We need to fit in.