(Meme is not OC)
Instead of framing it as a question of morality, a matter of logical consistency, and/or an environmental concern, I've started taking an amoralist/egoist approach and simply saying:
"The thought of eating animal products is gross to me, and I don't want to participate in the killing of animals when it's easy for me to avoid"
Which is quite hard to refute, because its about how I feel/my experience. They can question why you feel that way but, if you exclusively respond with 'I statements,' they really have no room to argue. I also feel that this is more likely to persuade people without having to actively encourage them- it has the potential to open an actual dialogue
What are your thoughts? Do you have your own method?
Many years ago I remember someone summing it up as: I don't eat animals for the exact same reason I don't eat people.