Murphy's Law of Food-Flavor
"The better something tastes and/or the more filling it is, the worse it is for you." (Well, duhhh...!) Similar to when you are given a spoonful of medicinal syrup and it tastes absolutely terrible, and so you figure that it MUST be good for you. (And of course, that may indeed be true sometimes, but I wonder if a lot of times it's merely somewhat of a placebo effect --- your body just hurries up and gets well so that it doesn't hafta stomach the tortures of gagging down any more of that horrid bitter/sour elixir!)
I love rich sumptuous foods like burgers and fries, but my hippie-guru doctor put me on a diet of yucky-tasting bean sprouts and tofu --- talk about a classic case of Murphy's Law of Food-Flavor!