>>16405106>it's popular so it's goodGuess despacito is the best song ever written too.
But seriously, people underestimate how much area legs take, they are roughly half of the body. When you do asymmetric stockings, that's a very sizeable portion of the design you're throwing off balance and thus asking for your attention due to how coloring and constrast works, it particularly affects designs that would benefit from top heavy features while letting the legs be an area where the eyes can rest. Instead you are splitting the points of focus and that obviously weakens designs. Also, proper ZR is just sexier, it's how it is.