In my opinion, slavery is far worse than death. Could you imagine working under a hot sun for 15 hour days only to wake up and do it all over again everyday for the rest of your life? Supposedly, this stuff was banned throughout the whole world but it is still ubiquitous. People and politicians actively encourage it by looking the other way, not caring, or justifying the use of slavery because of a pretty contract.
I do feel some pity for the animals dying for my own health, but in the same token, if I was not dependent on the local super-market, I would end up hunting it myself. For certain, America treats its animals far better than other countries. I won't eat veil, shark fin, or foie gras. There is a huge difference between inflicting outright suffering and growing an animal for the purposes of slaughter.
http://www.theatlantic.com/magazine/archive/1995/11/in-the-s...
>>> Migrants are among the poorest workers in the United States. The average migrant worker is a twenty-eight-year-old male, born in Mexico, who earns about $5,000 a year for twenty-five weeks of farm work. His life expectancy is forty-nine years. <<<
I'm hoping some things changed since 1995, but as someone used to to construction in California and had to compete against dry-wallers earning $3/hour, I am doubtful.
One would have to be very careful in choosing "ethical food," lest they have tunnel vision in only protecting animals, and by their pure nature of replacing lost calories with more vegetables, they encourage more human slavery in the world, and yes... in America.