This weekend I learned why you need a good mouse.
My rogue is low level still, but I am learning as I go. I redid my keybindings after reading the most excellent post here about that very thing (see the FAQ if you have no idea what I am talking about, its linked there) so that most of my moves are controlled by Middle Mouse. Namely (Ctrl) MM Click is some form of attack, (Ctrl) MM Up is a CP generator and (Ctrl) MM Down some form of finisher. Alt + Anything are oh **** buttons like vanish and the like.
So right. My wife starts playing WoW - good times, honestly. So in order to help her out I took my laptop off its docking station and plugged in a laser mouse to it so I could sit out in the living room and play with her.
We played for a bit and I logged in my rogue, and then - hell began.
Middle Mouse Click was not working correctly. I mean it wasn't _bad_ but it was not reacting on the first click - sometimes two or three.
Now some folks are saying: So what, that's like what - 3/10th's of a second?
Others are wincing in horror at the thought of trying to assassinate another player and losing that 3/10th's of a second.
In closing: Get a good mouse, don't do what I did. Friends Don't Let Friends Use Crappy Hardware.