Dear Rick, we boil bones down to make amazing gravy. Of course the marrow in them is essential for; vitamins, making marrow recipes. Loads of protein and good for you. We eat lots of soup, they are ideal for that as well. Nothing can escape from a soup pan, all the goodness retained.
As for the bones; as you may know they are not harmful ( beef bones that is), to dogs. Other bones are especially chicken. So give them to the dogs, they soon crunch them!
Regards from England.
Neil.