I really don't believe that anger and hate are addictive.....the strong feelings that we get toward other people...the gutteral feelings, seem to come to us all but we all handle those feelings in our own way. We do have a choice on how we handle ourselves and our feelings and we can all concsiously choose not to do things. It may be easier to 'let go' but self discipline or anger and hate management can work if we can't control the 'habit' ourselves. Yes I prefer to see it as habitual rather than addictive. Anger and hate are bad habits..get yourself over them.
There is nothing wrong with 'feeling' anger it's how you use it and that be the same for all the feelings we experience.