I know fashion can be outdated and new trends keep coming up. But as for something like this, this is more like picking your favorite food. Imagine if one day chicken is no longer a staple for its meat, and if you ain't eating bear meat or whatever you're a hipster. Imagine people going "what? chicken? who eats that anymore. hahaha". But then again more and more people realise that the food pyramid is actually unhealthy. They recommended way too much carbs in the diet.