Vegetarianism poses an interesting challenge from a philosophical perspective because it forces the moral theorist to distinguish, on a fundamental level, between human and non-human animals. As far as I know, nobody (even PETA) argues that non-human animals (hereafter “animals”) deserve the same treatment as human beings. On one hand, raising the moral status of animals makes it more difficult to justify such an innocuous practice as owning a pet. I assume most pet-owners would oppose reinstituing the slave trade. Yet, most of us instinctively recoil at the thought of brutally tortuing animals for pleasure.

In this context, Rik Hine’s argument for vegetarianism is refreshing (even if unsound) because it appreciates the ambiguity involved. Taking a page from William James, he argues that “the debate about eating non-human animals is living, momentous and forced.” Despite the fact that, as he concedes, we can’t render a verdict regarding the moral status of animals, we ought to refrain from eating them anyway. In a Pascal-style argument, Hine suggests that we put ourselves in the shoes of a gambler.

(1) If we continue to eat meat when it’s a live option that this might be immoral and it turns out, in fact, to be the case, then we have committed a serious moral wrong.

(2) If, on the other hand, we decide to stop eating meat and it turns out to be morally permissible then the worst harm we have committed is to deprive ourselves of a particular gustatory pleasure.

(3) If we continue to eat meat and it is morally permissible then nothing of ethical significance rests on this result, and likewise,

(4) if we refrain from eating meat when continuing would be unethical, then we have simply acted as we ought to.

It seems to me, ultimately, that the issue can be reduced to the potential harms proposed in (1) and (2). The severity of the respective harms, in this case, are so clearly asymmetric that we would be simply astonished if the gambler placed his chips on (1). Analogously, then, I would conclude that unless or until we are epistemologically able to access a definitive answer about the actual moral status of killing non-human animals, we are in the same position and, as in (2), we should cease to eat meat.

The obvious advantage of this argument is in its determining the relevant ethical behavior without taking a definite stand on the moral status of animals. It’s important to note, though, that Hine doesn’t conclude that eating meat is immoral but rather that we should refrain from eating meat because it might be. But are we morally obligated to refrain from activities that merely might be immoral? And if so, what is the significance of something that “might be immoral” if it’s immediately transformed into flat-out “immoral”? In the case of eating meat the possible offense is even more indirect. The meat-eater is merely benefitting from a possibly immoral activity. Even if I accept Hine’s assumption that one is obligated to refrain from possibly immoral activities, it would be too weak an obligation to extend to eating meat in general.