Dunbar's Number[1] could potentially be playing a role. When you're already so preoccupied caring about people on the other side of the planet, you literally ha

Dunbar's Number[1] could potentially be playing a role. When you're already so preoccupied caring about people on the other side of the planet, you literally have no cares left to give around you. [1]: https://en.wikipedia.org/wiki/Dunbar's_number https://en.wikipedia.org/wiki/Dunbar's_number