Respect
I think that people who don't have it for themselves sure won't have it for real towards other people, or other animals for that matter. If they do display respectful behaviour, it will be out of fear, desire for gain, or social compulsion - all reasonable motivations in many cases, but still not real respect.
Witness how most child abusers, physical or emotional, are people with very low self-esteem or have been abused themselves, for instance.
Witness how most child abusers, physical or emotional, are people with very low self-esteem or have been abused themselves, for instance.