I ask because I think veganism is often confused with lots of other good things..
I like to refer to the original (AFAICT) definition: https://www.vegansociety.com/go-vegan/definition-veganism
"Veganism is a way of living which seeks to exclude, as far as is possible and practicable, all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose."
(I posted that link yesterday too, but have no affiliation with the site)
It seeks to exclude, where possible, where practicable. It doesn't rail against industrialisation or the global economy. It's not directly concerned with the environment or being kind or being healthy or improving human conditions. Those are all Good Things, but separate things.
When I get asked those questions (and the 'where do you get your protein', 'what about if you were on a desert island?', 'where do you get your protein?', 'what about happy cows?', 'where do you get your protein?', 'what about grass fed cows|chikens|whateva?', etc) I say that I'm vegan because I don't believe there is any need for the society I live in to use animals for any purpose. I'm okay with contradictions and inconsistencies - I evaluate and make the best choice I can, day by day. Those choices add up over time.
If I get pressed, then I posit two questions: 1) Do you know of any animals that proactively seek out death? 2) At the end of an animal farming process, does the animal die?
So if animals are killed at the end of a farming process, and no animals want proactively to die; the only reason I'd support that regime is for my own selfish preferences.
Given there are viable alternatives, I have the option of choosing not to support the systematic death of hundreds of millions of animals every day. Sounds rational and good to me.
That logic still dumbfounds my family - literally speechless, even in 2019. Sigh.