1) Christ drank alcohol. Many saints drank alcohol. Alcohol is an ancient social custom going back to Noah. The greatest cultures have all consumed alcohol. Alcohol had a very practical use up to the last century. A method of sterilising water so you could drink liquids without getting sick.
2) Only degenerate cultures use drugs. Broken down, godless, hedonistic, hopeless, pagan cultures historically. . Therefore I would never use drugs of any kind. No saint has ever used drugs. They were banned by all high christian cultures as degenerate.
3) The purpose of drinking wine, beer, whiskey, brandy, a G&T is to enjoy them. The sole purpose of all drugs is to get high.
4) Once you pass the point of drinking to enjoy the taste of the drink, that is 2 or 3 drinks for me, then you are in the territory of gluttony, shortly followed by drunkeness at your 5th or 6th drink. Smoking pot is done specifically to enter that state. You are not quenching your thirst or enjoying the taste of dope. The purpose is to alter your mind.
5) This is not true of a man who comes home and has a glass of wine or beer.
1) Are we to believe that after a wedding had run out of wine, which probably would be 2-3 glasses/goblets per person AT LEAST, Christ made more and threw the party into the realms of gluttony and drunkenness with your magical 5-6 number?
Alcohol has served as many things for many cultures. That sterilization is an effect is nice, but not necessarily the only reason (in truth, it would not be sterilizing so much as sending present bacteria into biostatic shock where they no longer reproduce into make-you-sick numbers; ABV necessary for sterilization would be on par w/ liquor).
Natural fermentation hovers around 5% for beer. Maybe up to 7-8% w/ special yeast or more for special varieties which bring in non-traditional ingredients. Wine and other concoctions (mead, non-grape fruit wines, etc.) can easily get up to +/-10% without anything special. So on average, I would suspect that wine then was no weaker than now. As a home brewer, I know well that certain yeasts will never achieve more than X% ABV, and that others can go quite high. I might not want that so I can rack into secondary fermentation (really an aging/mellowing process) to stop it before it goes "hot" (certain alcohol byproducts get produced due to stressed yeast and while high in ABV it can taste like paint thinner unless aged for a year or two).
2) No, as alcohol itself is a drug. So is nicotine and so is caffeine. St. Hildegard in her book "Physica" devoted some recipes to using hemp/cannabis. Pope Leo XIII drank Mariani wine which was laced with cocaine (probably how he was able to write all those great encyclicals. LOL). St. Pius X did snuff (really think he did it because he liked the taste? Come on. It was due to its mind-altering effect as a stimulant.).
3/4) Who actually likes the taste of wine, beer, whiskey, etc.? They associate teh taste with enjoyment due to the alcohol, but the taste on its own, were that associated cognitive bridge never built? No way. If there were legitimately alcohol free versions of those (as there is for beer), who would drink them? I sure as heck wouldn't. We drink for the effect of the alcohol, which for all is different in dosage to achieve the same and/or desired effect. Guess what... when someone drinks a cup of coffee and has a cigarette, or has 3 beers and pops in a fat dip of copenhagen snuff, the desired effect is mental as much as physiological.
5) Again, referencing 3/4, what effect does a glass have and why on earth would anyone swill boiled barley or rotten grape juice if it had no effect? All alcohol tastes bad. I'd never touch a drop of any drink like that had if it no alcohol, because they don't taste good at all compared to other normatively non-alcoholic drinks.
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The only thing which would make alcohol consumption a sin is simply the loss of the use of reason -- wish someone would define that, as it's a useless platitude without said definition.
So again, it goes back to dosage in a recreational sense. If such dosage can be achieved, where it has the same effect as acceptable alcohol use, then there is no reason cannabis would be any different than dipping or smoking a cigarette.
And FWIW, I do not even touch non-THC containing CBD products, often used for anxiety, pain, etc., but having no psychoactive properties. On the off chance it has some trace amount which hits on a random drug screen, I'd be screwed. My job and its support for my family is too important to risk.
But we need to do better. Old tropes and bad analogies make us look stupid. A lot of the argument in this thread is based around the fearmongering which got cannabis illegalized in the early 1900's. It's not based in facts, nor figuring out how to achieve the happy medium of adhering to Catholic moral principles while recognizing updated information. In short, it's just Puritanism with the fat check of oligarchical lobbying money behind it.