If you want to whine.. whine about priest.  They can bubble every 15 seconds.

Ever fight them in pvp?  Just when you think you are going to kill them... they bubble and heal.. and come after you..

If you survive the onslaught.. deathcoil/dot/fear/SB them and they rebubble and heal again.. WTF.  And the bubble takes ALL the damage to some stupid high numbers to pop it