If alcohol was invented today, people would be like "no way we allow a juice that makes you happy, stupid, aggressive and endangers yourself and others and has high addictive levels".

I'd agree, but alcohol isn't necessarily highly addictive. The addiction depends on the dose quantity and frequency. I'm talking, a beer or wine, not necessarily liquor. I mean, let's look at the real word: for every alcoholic addict, there must be _at least_ one person that casually drinks one drink a week or two.