[lovemenot]

Personally, I have not chosen not to drink alcohol. But I have made a couple of different life choices. Equally arbitrary from others' perspective. And equally alienating. (Less than 10% of peers).

I hadn't known about Stoicism, but had discovered this concept for myself.

Perhaps some of those who are asking why you made this choice are missing the point. It's arbitrary and doesn't require justification to them. No more than their (and my) converse decision to drink alcohol needs to be justified to you.