Just hit 53 today. Yay. 31 levels of Vanish failing for no reason. 43 levels of pick pocket being resisted by sapped targets. 53 levels of sometimes being in stealth but having some guy running at me from out of nowhere and attacking me anyway.
WHO WROTE THIS STUFF?!
Standing in the middle of a field. Still in combat because someone stole my mob. No dots on me, so I choose to vanish just to mount up and go somewhere else. *POOF* Wait, why am I not stealthed? Nothing touched me? I'm not in combat... *mounts*
Fighting way too many mobs. *POOF* Mob's melee swing hits me for 156. WHAT?! *dead*
And seriously. Why can a sapped target resist pick pocket? Especially when it's alone. Suddenly, you're just standing there, unstealthed, behind some mob that can't do anything for at least 30 more seconds.. but you're in combat anyway. You could waste a vanish to try again, you could kill the guy and miss a pick pocket, or you could run away and waste near a minute of time before you can try again.
Then there's PvP. I'm stealthed standing way off to the side of a fight, waiting to see if I could help without getting slaughtered.. and some guy starts running my way. I'm at least 30 yards away to avoid any chance of AOE, but I target him, and he's already targetting me. I hope that the target-of-target is messed up, and run to the side. He follows and hits me.
And finally, there's the mobs that cast spells at random party members other than their target. I'm not even close to the fight yet, and out of nowhere some stupid dragonkin casts sleep on me. Or SW:P, or lightning bolt, or any other number of THEY DIDN'T SEE ME!