What an affluent society we have become, despite what others on here would have us beleive
In the old days offal was a good source of affordable protein, all meat was expensive (including Chicken) so offal it was and they came up with ever more inventive ways of using it. Intrestingly enough they still eat a lot of tripe in the poorer parts of the world
Nowadays of course we are all a lot richer and farming has come on, so they produce more for less and many of us hold our noses up at the very thought, and no I don't like tripe, but other offal is OK, Liver is especially good cooked in the right way