Simply because I don't have to take careful aim with a mouse. Running around getting head shots - even at some speed - is pretty easy. Great for mp twitch shooters that are all about skill and reaction time, bad for anything of a slower pace or something that's attempting to recreate the feeling of slowly and carefully taking aim with a gun. I like that in Golden Eye you have to stop and that each shot is measured. The focus is more on the process of taking the shot, and each head shot is worth 10 of those I get in CS or CoD in terms of satisfaction.
Analogue movement, when implemented right, is clearly better than a keyboard when it comes to immersion. Again, I wouldn't pick it for anything twitchy and online, but for anything that involves sneaking around it's in a different league. Ironically, due to many fps appearing on consoles and the pc we're now getting console fps that are dumbed down with digital movement to cater for the pc version!
Trigger buttons and rumble. I just like the feeling of squeezing a trigger, feeling the pad shake, and watching/hearing my gun tearing things up. I work in IT and spend all day clicking on things on screen and at times that's what pc fps feel like to me - pointing a cursor at things and holding down a mouse button untill they fall over.
I couldn't disagree more. The satisfaction of pulling off tricky head shots and juggling multiple enemies would have been completely taken away with mouse control. A game that took me years to properly master would have been brushed aside in a week. I don't think a mouse is better, but it's certainly easier - they'd have to have increased the speed 2 fold, or done that bloody awful mechanic where you aim and then have to wait for your crosshair to grow smaller before being accurate, to compensate.