This is always a decision that each of us can make, and it's complicated more when a partner is an addict/alcoholic.
I'll just say that, from experience and lots of observation and listening and studying, I firmly believe alcoholism is a family disease. Meaning, you are affected too and for your own well being, and understanding of yourself, future relationships, the gamut - getting help for yourself like Al Anon and counseling and such is really crucial.
We repeat patterns we don't realize, acknowledge or somehow think just won't happen to us....but we don't have to if we are willing to examine ourselves and grow.
Best to you. And your wife. Recovery is the path of bravery for those of us who need to do it - and emotional recovery is the path of bravery for those who love(d) us.