Did you really make an account just to tell me that?
ERW allows for a potential four (does it still go up to six, I haven't played in a few months) stack of Necrotics, in addition to giving 25 runic power. That's equivalent, and in some situations even better than, to anything a rogue, mage or hunter can do offensively. In tight situations I have even popped defensively just for a quick extra Death Coil heal (Horn of Winter + Empower Rune Weapon) and it has saved me.
Edited by Bracketx, 14 June 2013 - 12:30 PM.