Imagine if you well an entity that acts and reacts to stimulous. It moves with what would be viewed as purpose and direction yet at its core there is nothingness. It can smile, frown and depict all known emotions when such a response is elicited. When it looks at something, it can only relate what it is viewing in terms that are relative to it's self. It does not see those around it in their native context. It always acts in it's own interest as that is the minimum requirement of it's survival. It can procreate and raise young but never truly understands the purpose in anything it does.
It is merely a walking shell that stares back at me in the mirror every morning and I want nothing more than to wipe that smug grin off it's face.