[{quoted}](name=Laughing Fish,realm=NA,application-id=3ErqAdtq,discussion-id=4db3auRU,comment-id=000400000000,timestamp=2015-05-19T18:56:57.739+0000)
Changing your build to counter the enemy is a core part of the game.... Why do you think you can buy items in the first place, instead of just gaining stats with levels?
That's not the problem here. If you're an ADC facing a Zed, fine, get a Merc scimmy or a QSS somewhere around third item. But I'm LANING against him, and I need my mana regen/other core because QSS is simply not viable to go for in the laning phase. He's delaying my build by being him, or I don't buy it and get fucked anyway. You end up fucked in every situation. If I'm a Sion facing a Riven, fine, I'll get Frozen Heart, because that item works for me. QSS doesn't build into anything good, nor does it help me with my laning problems (mana, etc.). If you get a QSS against him you're basically surrendering because you won't deal damage to him in laning phase, having 0 counterpoke.
The only situation I would consider QSS a viable choice during laning were if I were playing an AD champion or Galio.