Here's something that many people probably don't know...
People die when they quit drinking alcohol cold-turkey.
In fact, I was hospitalized the first time that I quit drinking... I'd been having an average of 3-5 drinks per night for a month before, then when I quit, I had one day of a hangover, and the next day, I had shakes so bad that my roommates sent me to the doctor. The diagnosis was alcohol withdrawal, and the doctor told me that I was lucky I had roommates, otherwise there was a good chance that I might have died.
Now, besides air, water, and food in general, what else kills you when you quit using it? Perhaps some of the harder drugs do, but innocent alcohol can't cause that much damage! Oh no! (Sorry for the sarcasm...
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If anyone wants to experience the effects of alcohol without taking a drink, go into a decompression chamber. The quickly thinning air will starve your brain of oxygen in the same way that alcohol does, without a hangover, liver damage, or even withdrawal. Just be sure that the person controlling the chamber knows what he's doing, or you might end up with The Bends (nitrogen poisoning). If everything goes right, you'll be drunk in no time without any poisons in your system.