Yes, tweakers suck! Being from the Meth capitol of America (PNW) and having had my wife's truck stolen and totalled by tweakers. I'm not certain this fellow would have faired that well in my home. My wife would have plugged him immediately, me, I'd probably go H2H before the knives were involved and take out some pent up agressions towards tweakers.
Tweakers is one of the main reasons I purchased guns in the first place after reading about them (locally) going into peoples home and killing them over a TV or music collection or something trivial like that. I have two dogs too, they don't like tweakers either and always seem to know who they are when they even get 10 yards from us.
Glad it ended up being a non-incident regarding a shooting. Protecting your life and property is fine by me. But all that time in court justifying your actions and hearing the thug's family members say the "he just needed some direction" drivel wouldn't be much fun either. Then his family trying to sue you for some reason or another in a civil suit would bite also. Particularly on the West Coast where we don't have any castle doctrine laws in place yet. We would have to retreat first, shoot second. Not a great defensive tactic in my opinion, but just the way the laws want it done out here to keep you out of the legal quagmire.
However, I would make a point to advise the family involved to go to this dirtbag's hearings and make statements to the judge if need be. The judge seeing the faces on the recieving end of this dork's actions might just get him to stiffen the sentence up a bit, particularly if you bring the children to court with you. It will influence a judge's decision.
Hopefully he'll sober up in prison and rehabilitate himself. He's got a long list of charges against him, so he'll have plenty of time to think about it. I've seen tweakers get their act together and become worthy citizens again, but I also fully support the decision to protect your family and property. Please don't infer that I support the tweakers position, I'm just stating that this guy now has a second chance to correct his path because he did not get his wish to be killed.