Excellent rant! I too am mystified why some insist that carbs are somehow necessary. I've been on the keto diet for over two years, and I can personally attest that I've gotten along just fine without them. And as for carbs somehow being 'preferred' by the body, I believe that to be absolutely false. I believe that fats are actually the preferred fuel. Most research on metabolism is done using subjects who ingest large amounts of carbs. What's interesting are results from studies on people who do not eat carbs. Once you eliminate the carbs from your diet, your body gets along just fine without them. As a matter of fact, people who don't eat carbs have better lipid panels than those who do. It's almost as if carbs are gumming up the works and not allowing the body to work to the best of its ability. And almost nobody seems to understand the atherosclerotic consequences of eating carbs. Cholesterol isn't a problem in and of itself. Carbs cause cholesterol to manifest in smaller particles, and that's when it becomes a problem. And I can go 12-14 hours without eating and then lift weights before breakfast, all without carbs. So much for the 'preferred' status of carbohydrates.