I think I'm brushing Gazza with a broad stroke and trying to sympathise with him without really considering context too much.
When I reflect on his 'story' I've got to say that I am inclined to agree with various people here. He has been afforded very many opportunities to get himself out of this. Some of the advice he has been given and some of the people he has chosen to support him have been incredibly poor at times, and so he has possibly become apathetic to help when it is provided. In that regard, various people have failed him.
However, if he has been continually offered opportunities by others and he has shown a willing to recover and then simply thrown in the towel...that's a different matter and I can understand the cynicism of others.
It's a tough one.
You don't want Gazza to be an 'example' of every alcoholic depressive, as he simply isn't. In this case, however, unlike some other people who can and should be defended and supported, Gazza simply doesn't get it.