@miria You can have the stance that it's okay since there isn't any "mental pain" if you only kill them quickly, which a lot of people (except muslims and jews) have.
@miria They don't care about consent, and they probably wouldn't argue it, just wellbeing. If they actually argue about consent that's obviously retarded.
If you want to make a similar point about consent, talk about the fact you need to continually impregnate cows to have them give birth to then take their calves away and repeat and repeat so they keep producing milk forever. Artificial insemination in general, but the milk thing is especially traumatising to them