Earlier quoted context omitted.
If vegans were serious about stopping suffering, they'd create a machine that instantly destroys earth. Edit: While I'm perfectly fine with being downvoted for this and understand why - this was meant as a joke, and you shouldn't joke on HN - I need to point out that this Doomsday Machine Argument is a standard argument against Negative Utilitarianism, which was first published by R.N. Smart, and anyone with a negati…
Speaking as a vegan: The reason I am vegan is for utilitarian reasons. Neuroscientists agree that there is firm evidence that all animals (NOT PLANTS) are sentient to varying degrees. I believe that in the future it will be possible to quantify exactly how sentient each species is (e.g. a dog is 1/4 of a person or a cow is 1/5 of a person). Furthermore, through technology such as EEG, fMRI, and intravenous monitoring…
From a utilitarian perspective, ISTM such a situation could only be considered a net good for the cow, let alone the people who eat the meat. A good but truncated life has to be better than no life at all. The counter-argument would appear to be one of moral absolutism rather than utilitarianism—that killing a sentient being unnecessarily is simply wrong. Which isn't to say that that argument is necessarily flawed; I'm not sure there's even an argument to be had once you get to the level of disagreement on moral absolutes. But I do think the utilitarian aspect is interesting to consider.
Edit: As an aside, I recognize that the vast majority of farms (ie factory farms) are nothing like the idyllic farm described.