I'm always amazed at how popular the sandwich has been over the years. I regularly get offered sandwiches when someone brings in a lunch for meetings and get togethers. And yet a sandwich is one of the worst things you could possibly put in your body. We know that bread has zero nutritional value, is high in calories, spikes your blood glucose levels, and for gluten insensitive people, it's pure poison.
Then we add cured deli meats loaded with nitrates and sodium, and to make it even worse, we add mayo, full of fat and also high in calories. There is virtually no redeeming nutritional value to eating a sandwich, and yet it has always been America's favorite lunch because it's so easy to make and it's highly portable.
If I never ate a sandwich again for the rest of my life I wouldn't miss a thing.