Some people are sociopaths, and are incapable of feeling guilt or remorse. They don't see other people as equally real as them. Even a lot of "normal" people ob<x>jectify other people - seeing them more as ob<x>jects than as other people.
sometimes these people have been through so much themselves that they have become numb to hurting others... this does not make it right though. Sometimes people just dont care... and if this is someone you are in a relationship with I suggest you deserve better and end it (sorry if thats harsh) eveyone deserves to be happy x
Learned behavior from their peers/family. Or else genetics.
A lack of communication between the amygdala and certain other parts of the brain controlling empathy. ie, the text book psychopath
Because they feel they can and there's been no one to tell/show them otherwise.
I guess we all know a few of them, my guess, its genetic.
Why do bears **** in the woods?