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The main point for me is moral; animals are sentient beings. I know for some this is a hard argument to accept, but we're not built to eat a lot of meat.

The kind of funny irony is that a lot of people talk about ethical meat eating as if it's a way to care about things, but also not to alienate yourself from the rest of the world. But it's so much more alienating than vegetarianism.

Meat is a wasteful use of water and creates a lot of greenhouse gases. It puts enormous pressure on the world's resources. A vegetarian diet is better.

There is an overabundance of rational reasons to say no to factory-farmed meat: It is the No. 1 cause of global warming, it systematically forces tens of billions of animals to suffer in ways that would be illegal if they were dogs, it is a decisive factor in the development of swine and avian flus, and so on.

My take is that the optimal approach to food, for health and ethical reasons, may be vegetarianism.

All of us in society are supposed to believe that cruelty to animals is wrong and that it is a good thing to prevent needless suffering. So if that is true, how can meat be acceptable under any but the most extraordinary circumstances, such as perhaps roasting the bird who died flying into a window?

I think vegetarianism is a crucial ethical choice for an individual and a society.

Now that I know how supermarket meat is made, I regard eating it as a somewhat risky proposition. I know how those animals live and what's on their hides when they go to slaughter, so I don't buy industrial meat.

Not eating meat is a decision, eating meat is an instinct.

There's so many issues tied to the meat industry. I mean, social, environmental, humanitarian - all of them. I know that when I'm eating that I'm not hurting the planet, I'm not hurting other people on this planet, I'm not hurting animals... and I'm not hurting nature.