StingingVelvet: I am so tired of this silly statement. Controllers have been part of PC gaming since before mice were.
I like mice better than any input method I have ever seen. I am pretty sure I have always had a mouse with my PC, going back to the mid to late 80s (I think I got my first
286 around then), so I am uncertain what other 'controllers' you are talking about. Joystick? Yeah, never liked them, at least not for a PC game; not even for flight sims.
EDIT2:
Nobody will probably care, but I'll correct anyway. On reflection, I probably didn't have a mouse until I got my 386 and installed Windows on it. I don't know a reason why I would have had a mouse until Windows came out in 1992. Maybe I had a joystick and played games with that on the 286? I don't think I did. I think most, if not all, the non-mouse PC games I would have played would have been keyboard only; I had an Atari 5200 for arcade-type joystick games. Honestly, anything prior to 1990 is at or before my adolescence; those years are foggy for me at best :P.
Delixe: Lets be honest though. Would Diablo II be any worse with joypad controls? I doubt it.
Yes, in my opinion. If you played online, you had to be fast to target loot in Co-op and even faster to target other players in PvP. My mouse sensitivity has always been turned up to eleven, thus I was very quick and very accurate; thumbsticks seems slow and inaccurate to me by comparison.
EDIT:
Just remembered that attacking in Diablo 2 was directional, not positional (for the most part, at least). So, for that it might not matter a huge deal. I played a Sorceress in Diablo 2 mostly though, and precision teleporting was my main PvP method. Not sure how that would work with with any gamepad.
********************
I dunno, it is all preference, and arguing about it is silly. I use a controller with my PS3, but when I play a PC game, I want keyboard and mouse control options.