Answer:
Everyone has me, but nobody can lose me. What am I?
I only exist when you are here. Where you never were I can never be.
What building has the most stories?
Four fingers and a thumb, yet flesh and blood I have none. What am I?
I am an insect. Half of my name is another insect. I am similar to the name of a famous band. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.