You can be an alcoholic and be pleasant, law abiding etc. Or you can be an alcoholic and be an utter fucking arsehole. I'm not sure that's entirely true.
The pleasant law abiding drunk also has a negative impact on their family, from the money spent on their drink to the times they are absent (in mind if not body) from family occasions, to the inevitable arguments about being drunk, not participating etc. The amiable drunk is what the outside world sees. No family knows that person, that amiable public face is just the start of yet another time of apprehension, fear and loathing!
It's not about alcoholism being like anorexia etc. It isn't. It is completely different and does no alcoholi, anorexic, bulemic, smoker etc, any favours to say they could/should be viewed the same. To do so is to look at the effects and not hunt for the cause.
As forsucksfake says, the level of sheer self absorbption of alcoholics is different, has none of the same causes and none of the same cures as the other conditions mentioned.
Jesus christ, educate yourselves on addictions. Without wanting to mirror your accidental mic drop Tadda I am, through experience, through formal education, through working with various addiction rehab programmes. So I know there are many ways of approaching all addictions. I never did understand the ones that start from the logic that they are all a disease and the addict has no control... always seemed self defeating. Starting from the point that the addict has choices to make, right now, forever, for their own reasons, not those of family and friends, always made more sense to me.
But I am aware that no one route is generally more or less successful than another.