I couldn't sanely live with an alcoholic either. Some folks can. That doesn't make us any less, you know :ghug
Detaching can take several forms, not just emotional.
I had to detach in every sense of the word, emotionally and physically from my now deceased exAH. He was abusive physically, mentally, and emotionally.
I have had to detach in every sense of the word from my oldest AD. She is no longer welcome in my home, and I changed the locks after I kicked her out. It's remained that way for over 4 years now.