I guess I've kind of been avoiding this thread...
One of the reasons that I wanted to raise chickens was to get "in touch" with my food. As a society, we are so far removed from our food sources, that one of these days, I half expect some news organization to be shocked and run a story about how animals are being slaughtered for meat.
While my daughter was still relatively young (8 yrs), I wanted to make sure that she understood the concept of raising animals for food. She had absolutely no trouble adapting. However, after the first batch, she did get teary eyed because "all the chickens are gone." Honestly, I felt that way a bit too, so I got some laying hens. Now, we always have chickens, and meat birds come and go. She loves eating them, too.
But mostly, the experience was for me, and me alone. I've had a garden for quite a few years, and to me, this was somewhat of an extension of that. I'm the type of person who thinks that a meal isn't a meal without meat, so my garden never provided an entire meal. But now, I can grow entire meals in the summer. It's a good feeling.