Be careful in the words that you say to each other. What comes out as spite could do damage that last a life time.

Maybe it was their upbringing and the skewed tunnel vision they are brought up to view situations and treat other human beings. You cannot deny that nurturing a child is crucial in their adolescence stage as it could tarnish their adulthood. Their nature is largely attributed to their nurture. Akin to a robot the programmer is the one that inputs the data for it to function.