Hello A.K. and welcome!
No, it is NOT horrible what you're doing! Many ACOAs tend to avoid the alcoholics in their lives. Here, we call it "detaching with love"... You can love and care the alcoholics in your life, but you can chose to not go along that road.
It's important to look out for yourself and your family.
We all have to deal with the grief of growing up ACOA in different ways. Some people try to have a relationship with the (sometimes ex-) alcoholics, others decide against it. It's all up to you. You need to do what makes you feel better.
Let me give you a link about a local meeting group (AL ANON) - maybe you'd like to check it out:
http://www.al-anon.alateen.org/
I am so sorry though to read your post. It shows how hurt and sad you are. I think we all regret to have lost that relationship with the alcoholic in our lives. With me, it was my mom who drank and to this day I wish we could have a "normal" (well, what really IS 'normal' anyway?!) relationship with her. She is in an assisted living community right now and while I still call her and talk to her (she lives in Germany, I in the US so visiting has to be restricted) and write her, I would love to have a typical mother-daughter relationship... It's not easy.
You have come to a great place, I hope you'll stick around and get to know us all a bit better.
Welcome again to our board.