Answer:
Sometimes I annoy you, sometimes you can't live without me. But no matter how hard you try, you can't destroy me. What am I?
I am used when you jump off a bridge for fun.
I have a head and a tail but no body. What am I?
If a man carried my burden, he would break his back. I am not big but leave silver in my tracks. What am I?
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.