system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Alcohol would never be made legal if it were new in society

I think that we only accept alcohol in society because it is easy to produce and has existed for a long time. It seems almost certain that if it were a new drug, no rational arguments could support the introduction of alcoholic drinks.

As far as I can see the arguments against it would be: 

1. It will lead to unnecessarily dangerous driving resulting in deaths and the destruction of many lives

2. It will fuel aggressive and violent behaviour

3. Some people will become completely dependent on it and it will consume their lives and ultimately may give them a terminal illness

4. It will lead to unwanted pregnancies and other regrettable sexual encounters

The arguments for would go:

1. It will make socially awkward people feel more relaxed

2. It will lead to some interesting new drinks albeit almost all of these will be acquired tastes

I don't see that I've missed anything major here and stacking up the pros and cons leads trivially to the conclusion that alcohol is a bad idea.
gpt
There was a very successful movement with widespread support of banning alcohol in spite of it having existed for a long time—so successful that there was a constitutional amendment to ban alcohol in 1919 that passed by a 2/3 majority.

If alcohol were harder to produce, you're right, banning it would be a no-brainer. But if it were simply new, and just as easy to make as it is now? Banning it would lead to vast amounts of organized crime and tie up law enforcement and judicial resources so badly that you'd be better off legalizing, taxing, and regulating it instead of trying to enforce total prohibition. (Same as we're going through now with Marijuana, come to think of it.)