Originally Posted by asdbnmrty
They can be, and can net you more overall damage later in the game.
Problem is the inconsistency. Even going all crit runes and getting it to about 20% crit chance is still iffy. In any kind of serious play, you want to gauge your damage to see if you can win in fights or damage trades. With flat AD or armor pen runes, you for the most part know how much damage your going to do and thus know whether to fight or not. With crit, you mightttt do lots of damage... or you might not.
Yeah but I typically build for crit on my AD champs going 2x PD, IE, BT, Greaves, LW
This build with elixir of agility gives me 93% chance to crit, with 6% crit chance it would be 99% chance. I just want the better late game build and can still rely on winning trades w/o taking crit for chance since I only lose 6 AD by taking crit instead.
Edit: people downvote crit builds I guess