How can you eat what you raise? Its a question alot of people are asking me right now, because we just butchered our first chicken, but I look at it the other way around. How can you eat something who's origin and life are unknown to you? Some of the people asking me these questions are people who really like to eat chicken and other meat. They don't want to face the reality that most chicken, even organic chicken with high and mighty labels like "free range", are raised in factory-like conditions. Many never even see the light of day. I'd rather know the chicken I am eating lived a good life, that I helped to sustain it, before it became my own sustinance. Solely on the health level, I like knowing that my chickens and their eggs have more nutritional value because they are on pasture, that their flesh doesn't contain antibiotics or what have you.
I really recommend the Omnivore's Dilemna by Michael Pollan to anyone who is interested in the questions raised in this thread. Aside from being a fascinating read, it really makes you think about the origins of our food and the consequences of our food choices. The documentary Food Inc is also eye opening.
Ecologically, the closer we can get to providing our own sustinance, the better.