You can't have your meat

and your planet too. Ethical concerns aside, (see the free range chickens above) if people keep eating animal products, seeing as we number nearly seven billion, we won't have a planet on which to debate ethics, morals, or anything else. It will be a dead land. It doesn't matter if it's grass-fed, it doesn't matter how free range it is. There is not enough land to exploit, there are not enough resources to keep supplying enough animals for people to eat like they do.

   Food from animals is so resource intensive. There is no way around it.

Here is an excellent article with all sorts of facts and statistics to back these contentions up:

More and more, people are also realizing the troubling connections between human starvation and eating animal products. It takes approximately 16 pounds of grain and 2,500 gallons of water to produce 1 pound of meat (thus feeding one or two people on meat versus approximately 16 people on grain). Much of this grain is grown in developing countries, where a large percentage of their land is used for cattle-raising for export to the United States, instead of being used to grow staple crops, which could feed local people directly. In a world where a child starves to death every 2 seconds, it seems impossible to justify such waste...

These farms [organic/free range] are described as ethical because of the fact that they are small, sustainable and have kinder animal-husbandry practices. As many people have pointed out, these farms can individually produce meat in a way that is arguably just as "green" as eating vegan.

However, it is an inherent part of the ethical foundation of these farms that they cannot produce on a massive scale. As we've seen numerous times, the organic farms that do try to do this, very often become virtually no better than factory farms, despite the labels they often still get to keep.

For example, many cage-free or free-range chickens still live in devastating conditions -- they simply aren't technically kept in cages in the first case, or, in the latter case, are kept in huge, crowded and perpetually dark buildings, with a single opening leading to a few square yards of bare earth.

The question of methane pollution may also make it hard to raise animals on a massive scale, regardless of whether the farms could be sustainable in other ways.

The question is not, "are a few people eating local, sustainable, free-range pork worse environmentally than a few people eating vegan?" The question needs to be, "can we feed the world's entire growing population sustainable animal products?"...

Many people within this "new meat movement" argue that it is suffering, not killing, that is unethical. Can unnecessary killing ever be completely separated from suffering? Besides the obvious difficulty in assuring a life and death free from trauma, there are the FDA regulations, which send all larger meat animals to the same slaughterhouses that are used for factory-farmed animals -- facilities notorious for the suffering of both the animals and the employees.

Even if the animals die quickly on their home farm, what justifies this killing? Having foreknowledge of death is not a prerequisite for the right to live, or else killing an infant would not seem unethical. How are we justified in ending a life of happy contentment to satisfy a passing craving?...

Culture and tradition are never sufficient justification to continue unethical practices -- if they were, we would still have slavery and public torture. Traditions have to adapt with our changing values and ethics, although these changes may be uncomfortable and unwelcome.