I'm usually not one to care much about where my food came from, but the one thing I pay attention to, for some weird reason, is eggs. I think the idea of trapping chickens in cages for their entire lives and having them produce eggs for us is revolting, a real-life Matrix situation. I'll pay a few bucks extra to make sure that the chickens get at least a modicum of better life than being trapped in a cage for their entire lives.
Not sure if it is any consolation but at least "their entire life" is not that long. When I worked at an egg farm (25 years ago), we replaced the flock each year. If I recall correctly, the outbound birds were used to make dog food and such.