They may also point out that the land could be better utilised to grow grains instead of being used for rearing animals. This, they say, would yield more food per piece of land and could help to feed many hungry people across the world. As for health reasons, studies have indicated that people who restrict themselves to vegetarian diets tend to consume less saturated fats (which are found at the highest level in meat) and get higher amounts of beneficiary dietary fibre, and are less likely to suffer from high blood pressure and diabetes.
Further, it is argued that vegetarians may be less susceptible to certain types of cancer (Hayes & Laudan, 2008). As well, some people are restricted to vegetarian diets because of a scarcity of meat and other animal products or because the items are too expensive (Brown, 2010). Where scarcity is not an issue, some people choose to become vegetarians for one or more of the reason mentioned above. Vegetarianism versus morality Moral philosophers including Peter Singer and Robert Nozick have urged people not to eat meat on the premise of morality (Martin, 1976).
Such philosophers point out that people should not eat meat or animal products as a justification of their morality. This is referred to as moral vegetarianism. According to Martin (1976), moral vegetarianism is understood as the view that as a result of some moral principles, one ought not to eat some kinds of edible animals and some animal products. Along this line, there are two types of vegetarians: the lactovo variety who consider eating animal products such as eggs and milk not to be morally wrong; and the vegan variety, who regard eating animal products to be morally wrong (Martin, 1976).
This twofold nature of vegetarians in itself raises questions about the connection between vegetarianism and the obligation to become a vegetarian. Judging from the nature of vegetarians as shown above, the moral obligation to be a vegetarian is debatable. According to DeGrazia (2009), most people, including ethicists and philosophers, are not vegetarians and apparently do not feel obligated to become vegetarians. As Martin (1976), argues, it is clear that to have any apparent validity, moral vegetarianism must be taken to mean that there is a prima facie duty, rather than absolute duty, not to eat meat or products derived from animals.
The question is, would vegetarians rather die than opt to eat meat or animal products if they were presented with a situation where there was no non-animal food? Again, what would happen if such people ate meat or animal products (if not for health complications)? These two points amenable to discussion. But it is clear that the duty to be a vegetarian is a matter of personal decision, not a moral obligation. Moral vegetarians base their beliefs on respect for animals’ right to live. To such people, an animal’s life can be likened to a human being’s life, and thus, killing an animal for food is comparable to killing a human being for the same purpose.
Strict vegetarians will therefore argue that “one ought never to kill any nonhuman animal unless it were right to kill a human being in the same circumstance” (Martin, 1976, p. 15). From this standpoint, if is not right to kill a human being for food, it is also not right to kill and consume a bird or any other animal. Vegetarians holding a moderate position will argue that it is prima facie wrong to kill an animal for consumption but that certain human rights, such as the right to life, can override this clear wrong.
From this perspective, it would not be right to kill a human being but it would be justifiable to kill an animal. Additionally, vegetarians will argue that while it is justifiable to kill an animal in some cases, this is not allowable in cases where meat substitutes are available. In this scenario, it is not clear why some vegetarians would allow killing of animals and denounce it in different situations; or why some vegetarians are strict not to consume any animal products while others consume them.
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