Hot take: people get angry about veganism because they suspect, deep down, that vegans are right and feel guilty about eating meat. (Not taking the moral high ground here - I have put approximately zero effort into reducing meat intake at all.)
Ask a woman (or think about it if you are one) how they would like being forcefully impregnated then having their tits constantly milked, year after year. As a bonus, the born kids are separated into girls to be milked in the same cycle and boys to be killed and eaten.
Some people will get angry at you because you tried to do something good to much:
- not trying: that's ok, everybody is free to keep his life as-is
- trying 0-90%: that's ok, everybody is free to try doing some good
- trying 90-100%: you're a fundamentalist, you can't change the world
My advice: don't argue: - "that's extremist" / "that's not natural" / [...] => That's an opinion, you won't change it. Smile and route to another subject.
- "why are you [an extremist/unnatural/priest/...]?" => Question. Don't try to rant the full manifesto, you won't change their opinion neither. But if you feel confortable you may clarify a few inches of incomprehension :
- Have you heard of vegansociety's definition[0]? I don't consider myself as an extremist.
- I find Tofu very tasty!
- I won't try to change your habits, just doing thinks the way I like them better.
Golden rule: don't get upset. You're always free to not being confortable discussing your choices.0: https://www.vegansociety.com/go-vegan/definition-veganism
https://nautil.us/plants-feel-pain-and-might-even-see-238257