Alcohol is a deadly poison, or more correctly, the first stage metabolite of alcohol is a deadly poison. So long as used in small, moderate amounts, a healthy liver can detoxify the poison and break it down into sugar and water, in the process releasing more toxic aldehydes.
In very small doses, one unit or so, alcohol has some good effects on the body and brain, but a unit is not even a standard drink as served in either a can or bottle, or at a bar.
Even my occasional beers are in excess of one unit, because as imports, they are half a liter, or slightly over a US pint.
Combined with other drugs,especially benzos, alcohol can be deadly. Alcohol and opiates are also extremely dangerous and cause many deaths due to respiratory suppression. You just black out and "forget" to breathe.
I have no problem with alcohol use in moderation. However, while I believe OWI should be punished, I believe more in a treatment model for drug crimes, than a punitive model.
Anyone who gets behind the wheel after even one drink is an idiot. Anyone who drives under the influence of certain drugs without knowing FOR CERTAIN how those drugs effect them is an idiot. And the effects vary from person to person.
For example, I can drive under my (minimal) dose of lorazepam. I cannot drive under tramadol even in small doses, and I wouldn't dare attempt to drive under temazepam, which I also take a smallish dose of.
But, when all is said and done, Alcohol does a LOT more damage to the brain and body than opiates/opiods do, including heroin. Amphetamines are neuro and cardiotoxic as well as being psychologically very addictive, (Or, why I think Adderal and other stims probably shouldn't be prescribed to children unless closely monitored.
When I was in my 20s and stationed in Germany, I took part in a joint study done by the MPs and the Polizei. It was to test reflexes/ability to drive after consuming various amounts of alcohol.
I flunked after one beer, even though I felt sober, and my BA was only .03. My reflexes were slowed, and I had difficulty sorting through multiple road signs in time to follow the correct process for entering an intersection (this in a simulator).
That's when I decided that I would not drive after drinking...PERIOD. Even though I wasn't legally drunk by US standards, far from it, I was definitely impaired.