Being alcoholic is an addiction and you said he is hospitalised for treatment. Unable to understand why you haven't seen him for the last 4 years. He is your husband and father of your children, your unconditional love and care could make him get back to normalcy in addition to medication and treatment. Better to consult a Counselling Psychologist in your city and take things further in positive direction. You may have to share more historical information about your husband's condition that may be possible by direct consultation.

You need a lot of clarity, in what do you want to in life.... There is always a societal pressure to accept him even in these conditions... You are Confused due to those questions..