For some it's piracy. For others its the absence of a payment and distribution service that properly rewards modders for their work. For muscle-mountain Simon Miller, PC's biggest failure as a platform is the very presence of League of Legends.
Related: the best League of Legends champions for beginners.
As in League of Legends, the biggest videogame in the entire world. The basis for a sizeable esports world. Y'know: LoL.
Miller's reasoning? Well, inevitably it involves Marcus Fenix from Gears of War somehow and a methodical belittling of everything you like and enjoy in life.