So you've got a guy. He lives pretty well, does pretty well. And one day, someone offers him some candy.
As it happens, he hasn't had candy before. But the guy promises that it tastes great, and has very few calories, and is practically good for you, and it'll give him all these great feelings and such... and, you know what, the guy is right. He likes it. He gets some, and he starts eating it for dessert instead of pies, cakes, cookies, spiced fruit, and various other things he's used to.
His friends are a wee bit concerned, but not too much. After all, a little candy for dessert won't do any harm. But it isn't just a little after a while. He wants more, and then more, and then he starts to gain weight. His friends say, "Lay off the candy. It's just sugar." But he loves the sugar rush, and the way the artificial flavorings make his mind race for a while. So he has different ideas.
He finds some studies and warnings claiming that red meat is evil. It raises your risk of death. It has cholesterol, and that's bad. Candy doesn't have cholesterol in it. So he cuts all meat out of his diet, and in place of that meat, he eats candy.
I bet you can guess how that works - it doesn't. So, after citing similar studies about dairy, he gives that up, too, and he replaces it with candy. His friends are concerned, and they try to tell him that meat and dairy at least have vitamins and minerals in them. They tell him that a little fat and cholesterol won't hurt him, but the lack of nutrients will. But he'd rather eat candy than meat. It's quicker, easier, cheaper, more satisfying in the short-term.
Well, now he's doing even worse. His weight is still going up and he's starting to have tooth problems. But he has a new culprit - starches. Starches cause weight gain. Starches cause all these other problems, too. In vain, his friends try to explain to him that the risk of starches is that they break down into sugars, and the reason why the main problem is with refined and processed starches is that they break down more quickly into sugar. They try to explain to him that candy is already sugar, and trying to replace starches with sugar is just flooding your system more with what's wrong with starches. But guess what. By now, he loves the taste and feel of candy, and by now he's found that eating candy instead of meats and dairy means that he gets hungrier faster, and the lovely candy feeling fades faster, so he needs more candy and he needs it more often. So out the door go the starches, and it isn't long before the fruit follows, for the same reason... the sugars in it are 'bad for you'.
At this point, as anybody could guess, he starts getting more erratic. His doctor diagnoses him with Type 2 diabetes. His weight continues to grow. And he's got one final culprit left - the worst of all - and his arguments against it are even stronger than against the other foods. That culprit - vegetables.
Vegetables are what's really wrong with diet, he argues. Vegetables are worse than all else. He points to vegans and how many of them struggle to balance their diets. His friends try to explain that it's because of the lack of protein, iron, and other minerals in their diet and not because there's something wrong with vegetables, but he won't listen. He cites Eskimos and others who eat few vegetables and thrive, and they try to explain that Eskimos don't eat candy - they eat meat and fish, and the harsh environment means that their bodies make better use of such foods - but he won't hear it. They try to explain that what's wrong with his diet is the candy and the vegetables are the last thing he's got going for him, but he won't listen.
And he gets stuck on vegetables. When giving them up doesn't improve his health, he starts declaring that his problems are caused by people who eat vegetables. The only example he'll give of vegetables being problematic in a diet are vegans who don't put the effort into getting what they'd get from meat/dairy in other foods. He gets to the point where he's practically screaming it by reflex, his greatest enemy: "Vegetables! Vegetables! Vegetables!" He shuns his friends, because they eat Vegetables. He rails against society, because it allows Vegetables.
Unfortunately, this man does die young. He dies of malnutrition, while surrounded by good and healthy food. He dies obese, claiming that the only unhealthy people in the world are skinny.
First, he shunned religion and cultural tradition. in favor of socialism. Then, he abandoned principles of restrained and limited government and personal responsibility. Finally, he descended fully into communism while still believing that he was only dabbling in socialism, and his dying words were his rant against 'all that is wrong with this world'.
"Capitalism! Capitalism! Capitalism!"