Yeah, I think about that too. I imagine some people enjoy getting those cute little chicks and raising them at home, and then watching them run around the yard doing what chickens do, and then if a predator takes them tell themselves it was not their fault. Then they get to start all over again with the cute little chicks...
Before I got my chicks, I talked to our local 4H poultry coordinator and he told me similar stories of parents telling him that they had "bad luck" with their chickens and that they got killed by predators. He always asks them if all the birds were killed in one attack. They always say no, they lost a few birds every now and then over a period of months. To which he responds to them, you don't have bad luck, That wouldn't fit with this man's personality. I think he actually wants the chickens to live. He also has other livestock and he is a farrier by trade. I don't know him well enough to ask him what he is thinking, but I'm sure it's not a desire to raise chicks every year. It is all very odd to me. And, poor chickens!