Once the teedles hit veteran and try to do veteran dungeons and see that everything lobs fire.
That even with fire resist you turn to ash within a second then you should see most people curing.
Weigh down a group because of vampirism your gonna have a bad time.
I usualy ask people to fight giants in the Rift with their bare hands while naked for my entertainement. You would be surprised to see how much people actualy whine instead of just giving it a try.