The symbolism of meat-eating is never neutral. To himself, the meat-eater seems to be eating life. To the vegetarian, he seems to be eating death. There is a kind of gestalt-shift between the two positions which makes it hard to change, and hard to raise questions on the matter at all without becoming embattled.
Parts of you are phobic of anger and generally terrified and ashamed of angry dissociative parts. There is often tremendous conflict between anger-avoidant and anger-fixated parts of an individual. Thus, an internal and perpetual cycle of rage-shame-fear creates inner chaos and pain.