How can you eat these chickens?

I was pretty happy to learn that a bull in Spain jumped up into the stands and gored a few spectators cheering his cruel, fatal torturing. Checkout this photo essay about chickens living on a vegitarian farm. I suppose I would not object too much if these chickens got wacked humanely, after living the wonderful lives described here, happy and natural until their final 90 seconds. But how can you guys eat normal "chicken" meat at restaurants and grocery stores? I read an article recently about the 100 million dogs executed annually in China for food. Is that really more disgusting than eating cows and pigs, who are just as smart, and equally personable?