Answer:
I belong to you but others use me more often than you do. What am I?
I move without wings between silken strings. I leave as you find my substance behind
I can be winding and I can be straight. I can be smooth and I can be rough. Sometimes both. I start out black but fade to brown. My favorite colors are yellow and white and I love stripes and dashed lines.
I love to twist and dance. Though wingless, I fly high up into the sky. What am I?
My days are numbered.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.