why can't we all get along and love each other?
sometimes it makes me sad that we can't
sometimes it makes me sad that we can't
The reason why humans as a species of community animals is different to say, cows, lions or hell, ants?
Because everyone has a communication barrier by default, people trust and distrust each other, we protect and kill each other within the same community, it's our greatest strength and also our greatest weakness.
For popular reference material one can read/watch Parasyte and Hunter x Hunter's chimera ant arc.