Nan, one's profession does not dictate their character. Some of the largest aholes I ever met were MD's. Most get into the profession because they have damaged ego's and not to really heal.
Chris has really bad character so unless he rolls with Ghandi, he will never change.
I don't know you personally, but you seem like a good heart. If you lack compassion, well compassion is not something you can "grow", its again a character trait.
Cindy, someone who is secure within themselves will be kind on line or off line. If a person needs to let off steam by being an asshole on line, then I can bet a trillion bucks, they are assholes off line (wimps but still assholes).
There are healthier ways to let off stream. Being a "Retard on line persona" should not be one of them.