Hey there DLG
First, let me send gentle hugs to you as you try to cope with your situation.
I hope you don't really believe that your Dad has chosen alcohol over you. Unfortunately, no one chooses to become an alcoholic. It feels like they have but they haven't.
Lean on the people here for a while until you get your emotional feet under you. It's a good place to start. Alanon (or Alateen) is a great place to go once you are able. Right now you are caught in that awful place of denial and anger. We've all been there. We understand. We will all wrap you in our arms and help you learn to cope with this terrible disease.
gentle hugs to you--I hope it eases your pain to some small degree