Answer:
I am so delicate that even mentioning me breaks me. What am I?
I am a desire to munch
What do people spend a lot of money on every year, but never want to use?
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.
My first half means container. Not a lot of people understand my language.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.