I don’t drink, never tried it.
It has just never appealed to me.
My religion promotes a healthy lifestyle and as a result most people don’t drink. It is my responsibility to take care of the mind and body God gave me in the best possible way.
None of my family drink - parents, aunts, cousins, grandparents, extended relatives. Some because of their religion, most because of taking the decision themselves not to.
My grandad and all his family were alcoholic and my dad vowed when he was little never to touch alcohol. He (and us) saw the devastating effect alcohol addiction had on their family and town.
I want to be at 100% mentally so I can be the best I can in what I do. Drinking, smoking, eating crap affects your brain and doesn’t allow you to exploit all your mental and physical capacities. I’m still working on the eating crap part 
Professional sportsmen and women refrain from drinking regularly or smoking, because they need to operate at 100%+ every single day.
I’m in a job where everyone has a beer at the end of the day, it used to get tiring explaining why I was always asking for an alcohol-free one. Lately more and more people are choosing not to drink every night, some try going a whole month without any alcohol, and there is a general change of culture in the circles I move in, regarding alcohol consumption. You’re not seen as the weird one anymore, at least not as much as it used to be.