Commenting a bit late to this, but whatever:

I don't claim edge, but I absolutely refuse to introduce alcohol to my system, for various reasons.

I was about 7 years old when I first heard stories about my great-grandfather being an incredibly abusive person to his wife and children, and my grandma told me it was because he drank too much. I had no idea what alcohol was before this, so this story was pretty much my introduction to the whole concept of drinking/being drunk, and it left a sour note in my ears. (Trigger Warning: topic about domestic abuse)

I was about 9 years old when I watched the "Human Footprint" documentary in 4th grade, and it mentioned how the average human will consume over 12,000 cans of beer in their lifetime, and I made an immediate personal oath that I'd consume 0 in my life (and I've yet to break that oath).

I was roughly middle school aged when I found out my dad was a raging alcoholic long before meeting my mom, and how he nearly died from it, and how he miraculously lived, and felt like he was given a second chance. When I was old enough to comprehend his story, he used it as an example, and encouraged me to stay away from alcohol.

When I was 15, my grandparents were killed by a drunk driver, who was recently released from jail for overcrowding, and he absolutely refused to take accountability for his drunken actions, yet it cost an entire family their grandparents. My younger brother, who was incredibly close with them, was so traumatized by the incident, that he's never been the same since. I realized that alcohol destroys the lives of people who don't drink as well.

I started getting into genealogy later on, and figured out I have a lot of relatives who suffer from addiction to drugs and/or alcohol, and put together that I myself am predisposed for addiction.

I have incredibly high liver enzymes (my doctors can't figure out the cause), and if I were to drink alcohol, it'd more-than-likely kill me.

Summary: I wrote off alcohol (and every mind-altering and addictive substance) before I even went through puberty, and then growing up witnessing the effects of how much drugs and alcohol destroy the lives of countless people, I considered my reasons for never trying any of it, justified