The horse thread make me think about the welfare of other animals. Did you know 90% of eggs sold in Australia are from caged hens? A single battery farm can hold thousands of hens, stacked in tiny cages five rows high, they will never see the outside, never stretch their wings and suffer horribly throughout their short lives.
I think it is only a matter of time before this is made illegal (I think in some states it already is), but I suppose where do you draw the line? What about pigs in cages so small they can't turn around or stand up. I hope one day all animals sold for meat are free range and live better lives (I know inevitably they are sold for meat, but no reason for them to suffer horribly for our dinner)
I guess my point is, if you buy cage eggs just consider the difference you could make to the industry if you spend a couple more dollars to buy free range