Do you eat the whole chicken?

My parents and most of the community I live in immigrated to the US from the Soviet Union. I’ve noticed that my friends and relatives from the old country completely devour a cooked chicken, no matter how it was cooked. When I say completely devour, I mean the neck, the skin, the cartilage and the stuff inside the bones too. Personally, I find I can’t eat any part of the chicken but the breast (and occasionally buffalo wings).

I’m wondering if people from the old country learned to utilize all parts of the chicken because of scarcity of resources and a stronger sense of practicality. You don’t often see Americans gnawing on the bones at KFC…

So, is there a connection between eating the whole chicken and coming from a land of fewer resources? Or is just a coincidence that my American friends and I are strictly white meat and everyone else I know are marrow-suckers?