I'm sorry but you can't make an argument about logic and then say that being vegan is grossly inefficient. It's more efficient than eating meat. Meat takes a week to process through the digestive system, where as plants take a day. You burn more energy processing meat than you do processing plants. And what about our teeth says we evolved to eat meat? Please don't say canines because if you look at real canines and then look at a humans canines they are totally different. Same name, but functionally not the same. Real canines tear through flesh a lot easier than the human canines can. Look no one can predict what we are supposed to eat, but to assume that being vegan is a stupid diet isn't logic speaking, that's culture speaking. Not sure why you get offended by veganism, but you should look into it more before you criticize it. You should ask a nutritionist about the vegan diet and how healthy it is. Get a professionals point. Like I said, I've been a strict vegan for 12 years (no honey or processed sugars). I don't know if it's contributed to my health, but it definitely hasn't hurt it.