So if I get drunk and drive into a tree and can't work anymore because my injuries were too severe, I should be able to get disability, but if I managed to get

So if I get drunk and drive into a tree and can't work anymore because my injuries were too severe, I should be able to get disability, but if I managed to get hooked on an addictive substance then I can't even be allowed to manage my addiction symptoms? Only thing ridiculous here is your short-sightedness.