Why can't I get used to console-style controls in FPS games?

[Keverino]

I used to play Doom and Quake on the PC and am very used to the PC's keyboard and mouse combination, but I've tried for hours to get comfy with the Xbox controllers for Halo and Doom3 but despite many hours I still reel around like a drunken 3-year old. Any suggestions?

[P3R50N]

personally i think its just the xbox controller. its so lunky and big. i prefer the ps2 controller and would even go as far as suggesting buying a conversion cable and a ps2 controller. its more ergonomically correct and just has a better feel and button layout.

there are however converters for xbox 360 and ps3 that allow you to use your pc mouse and keyboard. just do a simple google search.