Undead are the forsaken: just like you. While it's important that you don't fall apart (physically or mentally), you might find yourself salivating in an unhealthy manner when someone comes selling cookies. Get more sleep.
You're a creepy, creepy warlock. You delight in the darker things in life - such as setting people on fire, and delight in the macabre. You'd probably fake your own death just to freak people out by getting up from the casket at your funeral.