User blog comment:Zilla4444/Less Randomness: Critchance/Critdamage; Wriggles;...Remake/@comment-5196742-20120617191423/@comment-5196742-20120617193607

Something to keep in mind is that critical strike (Especially the items I mentioned before) are really there to make AD carries a massive threat late-game. Yeah, 250 damage from auto-attacks is strong, but it's the consistent double damage hits that make them really painful and a target to focus down, so it all balances out.