Actually got frustrated tonight. Ran into a single rare with 3 affixes, one was vampiric. Now normally, they have healed once and then I killed them. This fucker, i would spend all my spirit, get him to ~40% and he would hit me once and heal to full. He did this 7+ times at least. And the entire time I am fighting him, never proc'd earthen might for the free full spirit + 100% crit to try and burst it down. The druid is fun and tanky, but man if you don't proc the spirit refill, it can be down right tedious. Trying to maul to get spirit on mobs that swing and take 25% life or the affixes almost kill you as you go into to melee. Just makes me want to play a build not so reliant on lucky hits or has such resource problems on single targets. Packs are no issue as you get spirit from hitting mobs and a ton more hits to proc that lucky hit.
Honestly thinking of trying the tornado, but seems it requires the unique helm to function. And the game keeps giving me hunting rings or 1h axes. But it seems a lot less reliant on a lucky proc for resource or packs, can do single target dmg pretty damn well and is fast in the movement department.