I enjoy the physical sensation provided by alcohol. But in my experience it is one of the most dangerous drugs for me regarding loss of self-control.
I have never experienced any other chemical that put me so out of touch with my physical ability, but at the same time obscured any perception of loss.
The few occasions where I have experienced the greatest risk of death or severe injury have been when I was black out drunk. At that point I likely perceived no risk at all, and that's the greatest danger with this chemical.
Most of the time I can control my intake. However, when I am with friends and we're drinking liquor, I get caught up in the moment, and I have no perception of how drunk I am aside from loss of coordination. However, I quickly cross this line, get so caught up in the moment, and seem to forget the fact that I'm intoxicated. This eventually leads to consuming so much that I am a danger to myself.
I've come close to drowning in a hot tub from passing out. I must have instinctually realized the danger of what was happening, and clawed my way over the edge to pass out on the side.
I've also closed a bar with some friends, and on the walk home decided I needed to move, so I just started running down the street. Eventually I lost my friends and I spent the hours of 2am-5am between being passed out on the sidewalk and wandering around a city I didn't know. I woke up the next morning in my car, with scrapes on my skin and blood on my clothes from falling. I'm lucky I wasn't picked up by the police or hit by a car. The most frightening thing is that I had no recollection of leaving the bar or getting back to my car, or anything else between that.