After the Frozen Orb / Electrocute bug was fixed suddenly there is this HUGE drop in the number of Wizards in diablo 3.

Whoever saw it in action (and tried a different build) knew the nerf would be coming, but was funny to see people try to argue it wasn't op.

Still, if you were used to do 10 million damage and now you are not as strong (and possibly will never be that strong again) it kinda takes the fun of playing the game with the class.