Using this logic we must already be a nation of drunks. So what's the difference? Might as well legalize the drugs.
We legalized alcohol and spent the next 70 years fighting the effects of legalization. Drugs are much worse because a person can always sober up but the effects of drug addiction make that less likely.
Right, because alcoholism isn't addicting at all.
Not to everyone. The percentage of people who are addicted to alcohol is very small. Not everyone who has a beer or a glass of wine with dinner is an alcoholic or even gets drunk. Everyone who uses drugs, including marijuana does so with the intent of getting high (even if they lie about it).