I was a vegetarian for about a year, due to ethical reasons. I figured if I could survive on a plant diet, it would cause less pain in the world.
Then I realized how stupid it was that I was eating dairy and eggs, when those animals suffer in confinement just as much (or even more) than those who are killed for meat. What's the real suffering anyways, a violent death or a life of violence?
Not only that, but male cattle are sent to become veal, while the milk meant for them is drank by vegetarians. Same with male chicks, who don't lay eggs, they're victims of infanticide. So just as much slaughter then occurs for someone who eats dairy and eggs everyday, aka the healthy vegetarian.
With that, I became vegan. That lasted for about a month, until I read http://www.beyondveg.com/ and realized my health was in jeopardy from a vegan diet.
So what to do? I didn't want animals to live as slaves, abused and slaughtered without ever really living. So I opted for wild animals.
Hell, even humans are domesticated animals. Only a wild animal has a real chance to live life naturally. Live natural, truly free, and die swiftly is something I'm not ever going to have, as a product of civilization. The best I could hope for in that equation is the swift death. So I ate only wild fish for a few months.
Then I decided that it was the factory farming that is truly inhumane (and insane). Feeding corn to cattle, that's fucked up - feeding meat to cattle, that's an abomination!
But pasture-raised animals have a life a lot like mine. I can wander, but not too far. If I can live like this, so can my food. People who are truly slaves to culture, non-self actualized, pig-brained fools - they are to me like cattle forced to eat meat. They don't know any better. Funny, that's exactly what they're eating, the abominations...
Myself - I now eat traditionally raised animals (pastured, grass-fed where applicable) and wild animals. When I go shopping, it's at the food co-op, which features locally raised animals and produce. When I go to the restaurant, I get some wild-harvested fish.
I figure then none of these animals has a life much worse than mine; the stimulus provided being relative to brain power. And so I find that what's best for our food, is best for us too (good fats, no exogenous hormones, no antibiotics, no GM feed).