I think that most of the reasons put forward are more justification than anything else.The actual hatred is way deeper than mere 'reason' and it stems from a deep dreadfull fear.
2 Corinthians 2:16 "To the one we are the savour of death unto death; and to the other the savour of life unto life. And who is sufficient for these things?"
The smell of burning grave clothes puts the devil off! :)