We use metal utensils because there's nothing worse than breaking off a piece of plastic in your steak. We sometimes use the unbreakable camping dishes and wash them, but when we don't feel like doing dishes we get paper plates. But PAPER, not styro, and nothing that has plastic in it, and we try to get the ones made of recycled paper. Then we can just throw them in the fire and nothing goes to waste.
The dishes are just one of many things we do while camping to reduce waste. Our soap for example is biodegradable and safe for the environment. On sites where we don't want to dump dirty water (near a lake or river) we use the paper plates. All our food that we bring is pre-cut at home, and everything comes in Tupperware containers. The only "waste" we leave with when our camping trip is done, is empty beer cans and gin bottles
But those go to the recycling center when we get home.