not everyone can afford top of the line pc's dedicated to gaming; or keep up with said pc advancements.
besides, i can never get used to playing games via my keyboard.
Fair enough, although you don't need a top-of-the-line PC to play DKS at console quality graphics.
And you can use an XBox 360 controller on a PC (you need to buy a USB receiver to use the wireless ones, but it's not expensive). I have one but don't use it for DKS, as the PC control scheme isn't really optimal for it - I'd hate to have to manage my inventory with a thumbstick, instead of just clicking and dragging with the mouse. But most windows games have proper '360 control schemes - games like Arkham Asylum and Assassins Creed 2 are much better with a controller than with mouse and keyboard.