The Keyboard/Mouse is awful for games.

[Xero]

Keyboard and mouse work much better for FPS (and RTS) mainly for the accuracy.

Otherwise, including a game like GTA 3 onward, I'd rather go with a controller for most games, which is easily done with an adapter as ClockShot said. But you're more saying Keyboard/Mouse is worse than Controllers, not computers are worse than consoles.

And considering my computer makes the game usually look better than the console counter part, if I had the choice and there weren't features missing I'd much rather go PC.