Answer:
You seek me out when your hunger's ripe. I sit on four legs and smoke a pipe.
I am a desire to munch
I must be broken before you can use me. What am I?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
I need to be taken from you before you can have me.
What is always coming but never arrives?