I know how you feel. For some reason I only feel the need to cause a little chaos if my character happens to be a vampire lord. I don't know what it is but the vampire lord just needs to cause chaos every once in a while.
I feel it too! "Lording-Out" always puts me in the mindset that something is about to
DIE. Have you flown across the plains of Whiterun Hold, simultaneously using
Detect All Creatures to instantly detect your prey? I'll then enable
Vampire Sight and slaughter everything I find, in the dead of night! Bwa-ha-ha-ha-ha!
Somehow, no matter what alignment of character I'm playing, I always end up killing that holier-than-thou Altmer woman in Solitude, the one who runs the store. And stealing her clothes. And putting her body up like a little picture somewhere upstairs. Nobody really misses her, but she tends to get on my nerves (and in the case of my main character, she's got an extremely low tolerance for high elves and all their ilk) more than anyone else.
There was also that moment I attempted to kill Rolff, but only ended up finding out that (for some reason) he's essential and got my ass arrested. Did the same thing with Maven Black-Briar.
Oh, I know! I'm perfectly willing to forsake quests if it means playing my character, but alas... Neloth, the Telvanni wizard in Solsthiem is a perfect example of this. Zolo-Shea sacrificed everything to escape Telvanni assassins more than a century ago, and now there's a house member right in front of me!?
"Now
you are
my slave, Telvanni maggot! Your foolish tricks are but nothing against my
Blood Magic! Your libraries will burn in the name of Molag Bal!"
Granted, sometimes it's cool when I go against an essential NPC so that I can toy with them for as long as I like... but other times I wanna straight-up murder someone! I reeeally wanted to kill Neloth. Maybe after I do his quests? No way, I would never bend knee to House Telvanni again!