The chicken could also die peacefully one night in it's sleep after living to a ripe old age.  Do we tell everyone feint of heart no pets EVER for you now?
If you can snap it's spine and watch it die in your hands, that's good that you have the courage to do the right thing when it's time.  If you give it a pill and it quietly, and less convulsively accomplishes the same thing, well isn't that good too?  I mean, the end desired result is your animal is put down in as painless of a manner as you can w/o suffering for hours or days waiting for whatever 'method' to take place.
You point is very well taken though.  How many chickens and ducks are sold as peepers around easter time because people think they are cute, and want to give them to their screaming brats.... and end up dead two weeks later because of god only knows.
Oh relax Aaron, it's just a friggin chiggin for crying out loud, a 2 dollar peep, nobody cares.  THAT!! IS.... the problem. people NEED to care.  Also agreed, there are plenty of people out there who should NOT have pets period.   Dogs, Cats, Chickens, Birds, or otherwise.  Half them should not have children either IMO but that's another topic.  Too bad we can't round up people and sterilize them like we do at animal shelters.
Aaron