> Killing someone while drunk should be considered premeditated.
I agree.
> Some of the current drugs out there need to stay illegal. Not because they get you high, but because they are toxic.
OK, I'll replace 'toxic' with 'potentially more addictive and dangerous than weed, alcohol, and nicotine' (Tobacco is damned addictive but it doesn't seem to cause antisocial behaviors.), because otherwise what you said makes no damned sense.
Go back to the late 1800s: People could buy cocaine and opium over-the-counter at drugstores. Laudanum (also called tincture of opium), a common patent medicine, was made from 10% opium and 1% morphine dissolved in alcohol. This, too, was available over-the-counter. America was prosperous, growing, and certainly not universally addicted to drugs.
So, why do you think going back to that regime would be dangerous? What evidence do you have that contradicts my historical analysis?