Oh, come on, Chaos.
That said, the keyboard+Mouse controls are actually decent, and quite intuitive, and pretty easy to use; you don't need to buy peripherals or shit, and honestly I doubt that a joystick would really be that better in terms of performance. What I like with the joystick is that I'll have all the major buttons within reach, which'll make it easier for me to concentrate on firing: trigger for the guns, button 2 for missiles, button 3 to swap guns, button 4 for closes targer, etc etc.