On your first point, maybe alcohol is the medium but many alcoholics don't use other illegal drugs. If they were truly addicted to anything that provides similar sensations, they would/might be more interested in trying other substances.
On your second point, sometimes the person's thought processes cause them to make bad decisions constantly because they no longer maintain any objectivity.
I know someone (not well, just through having done some A/V work at a local bar/restaurant) who got his second DUI recently. He lives across the street from this place and until recently, would come in early on Sunday mornings to clean. When he was sentenced, he was required to have an ignition interlock (blown into), an ankle bracelet and he wasn't allowed to drink for 24 days. Guess who was back at the bar immediately after being allowed to leave the house? One of the first times he went back to the bar, he reamed one of the bartenders so badly that she was shaking and crying. The guy can't make a good decision to save his life- after asking several people if he should co-sign a car loan, he did it anyway. He started a fire in a dumpster when he lit a firework and it went inside, he has been involved in several minor altercations and he damaged his new car within days of driving it off the lot. He hit his garage last week and tore a hole in the door, too. He blames everyone for his problems and when he asked me to look at the security camera DVR after setting the dumpster on fire, he was very sheepish and acted like he was the biggest POS on the planet but he never said anything about being sorry.
He's not uncommon here, either. We have far too many people who drive after revocation/prison/Huber/multiple DUI offenses. He needed to be forced to see that he's not in control of his life and that means he WILL do something bad again. Hopefully, nobody else will be hurt or killed.
They are "professional victims". From my experience with a couple people like this, (one who just got her 3rd DUI), the excuses that I have gotten from her are just disgusting. She also was right back in the bar, after being bailed out from her last hit and run/DUI. She is awaiting sentencing now. Hopefully she will get time this time (she has never gone to jail) and she will go to counseling/treatment as is being recommend.
Her "trigger" she claims was her father dying. Funny though, he was alive for her first 2 DUI's. I tried reaching out to her but her "real" friends are buying her drinks at the bars and she is posting this on her Facebook page.
She is a genuinely nice person when sober. In all the time I have known her, the majority of us meeting or bumping into each other, she was under the influence. Mainly alcohol, but I suspect there are other habits mixed in.
She will unfortunately end up dead.
