Or morons like me who never thought to macro it. Extra stupid since I macro Berserker Rage into my regular rotation attacks, you'd think I'd have macro'd Deadly Calm into Heroic Strike and Cleave but I never thought about it. It just sits on my bar, unused except for that rare time I remember I even have it.
I guess I'll macro it tonight, and enjoy it until 5.2.
I prefer not to macro Zerker Rage so I can use it to control enrages and RB procs. But if want it macro'd I'd suggest putting it with Csmash since that's the important one to have enrage and RB up for.