Substance abuse neither justifies nor excuses bad behavior.
True fact. But it can lead to tragedy. You may well be legally justified in shooting an intoxicated man trying to get into the wrong house, but you are not going to like the aftermath one bit.
If you CHOOSE to kick my door in anyway, you're probably going to get shot.
Could well happen if it occurs at my place, too. I really, really hope not. The aftermath would be terrible. Particularly if the "kicker" turned out to be a person liked in the community and portrayed sympathetically in the media, even if I had been dead to rights and had seen no other realistic alternative at the time.
I'm retired and do not have to look for a job, as did the Miami cab driver whose story was related by Mas Ayoob, and I don't have kids in school, but I wouldn't want to be known as a killer for many, many other reasons.
It's just what's going to happen.
Nothing like creating discoverable evidence that could be used to establish state of mind in a less than clear circumstance not currently foreseen...
We have a castle law where I live. Shooting a man kicking in the door would be justifiable--legally speaking. And it might turn out to be unavoidable. But I've had three experiences in which intruders, attempting or having made unlawful entry, were dissuaded by the mere sight of a gun and I very fortunately didn't have to fire. And if the person really appeared beyond reason and if I happened to be home alone, I guarantee you I would at least consider getting out before shooting and letting the police handle the drunk, even absent a legal obligation to do so. My circumstances would be a whole lot better for a long time afterwards.
I cannot and would not tell anyone in advance "just what's going to happen."