My useless opinion here is that making stock from leftover bones is the ABSOLUTE opposite of waste!!!
You paid 5 bucks for a 5 lb chicken. I feed 5 people (ok 3 are small) 2x on just the meat. If I make stock I dont buy it at $1 a can. I save up 2-3 chickens worth of bones, voila!! 2 months worth (if I dont make soup) of chicken stock.
Not that there's anything wrong with that.....