Why no Z?

From cattyhunts :

A - Age: 28
B - Bed size: Futon (broken so only in sofa position).
C - Chore you hate: Washing dishes.
D - Dog's names: None atm, but previously Anya.
E - Essential start your day item: Coffee.
F - Favorite color: Chartreuse.
G - Gold or Silver: Silver.
H - Height: 6'4"
I - Instruments you play: Piano & bass.
J - Job title: None.
K - Kid(s): None.
L - Living arrangements: Live alone.
M - Mom's name: Mary.
N - Nicknames: None.
O - Overnight hospital stay other than birth: A few.
P - Pet Peeve: "I could care less"
Q - Quote from a movie: But ya AAAH Blanche! Ya AAAH in that chair!
R - Right or left handed: Left.
S - Siblings: 2 sisters, 1 brother.
T - Time you wake up: Varies wildly.
U- First word that comes to your mind for "U": Unicorn.
V - Vegetable you dislike: Tinned tomatoes.
W - Ways you run late: Oversleeping and losing things and having to search for them.
X - X-rays you've had: Chest & lower back, that I remember.
Y - Yummy food you make: I make a mean curry.