Why do people insist that building defensive tank items is how you counter DPS champs?
Stuff like 
or 
DPS is, as an entire form of damage, designed to counter Tankiness. The vast majority of us are smart enough to know that you should almost never throw an ADC at an Assassin or Burst Mage. The vast majority of us are smart enough to know that you should almost never throw an Assassin at a Tank or Bruiser. Why then, is it so hard for people to realize that trying to optimize tank stats against Vayne is not what you should be doing?
Like, let's rephrase it like this:
Throw 
against a 
. Talon will most likely die in a full on fight.
Throw against a . Kalista will most likely explode in an instant.
Throw against a tanky ? It should not be a flipping surprise at this point that Malphite would be kited and die.
Look, I understand if you think any of these incredibly infamous (at least on the boards) champions are overtuned; I think Vayne shouldn't have nearly as many flat stats on top of the percentage damage she does, for example. And I understand that if you are primarily a tank main, you need to put up with these guys as gigantic pains in your backside in most games. I just implore you to understand: Trying to fight Vayne by getting Tankier does not work. Team up with your team's Assassin or Burst Mage (usually your mid laner), lock down the ADC for them, and peel for them when they need help. An even semi-decent Zed or Talon or Syndra will kill that annoying Kalista hopping away from you, or blow up Vayne even as she enters stealth through their aoe. Use your team's strengths against these DPS champs' weaknesses and I assure you that these sort of mobile DPS champs are not nearly as invincible as the boards have brainwashed you to believe.
