What Anvil said. And just to be clear, this isn't about his family's being a "bad influence." Alcohol is EVERYWHERE in our culture. One of the things about alcoholism is that the alcoholic NEEDS it, to feel "normal." So if it weren't Dad and Uncle, it would be the guys at work, or the "stress" of classes, the job, the relationship, whatever. Anything is an excuse to drink.
I've been in two marriages to alcoholics (one sober, one not), and I'm eight years sober, myself. Believe me, you do NOT want to get married to an alcoholic who hasn't fully recovered (and we are talking at LEAST a year of continuous, relatively happy sobriety). Even more do you not want to have children with such a person. Everything becomes infinitely more complicated when you put legal ties and children into the mix. And it's HORRIBLE for children to grow up with an actively drinking alcoholic parent.