Answer:
You do not want me when you donβt have me, but when you have me you donβt want to lose me.
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
I widen my jaws when you poke two fingers in me. I especially like to devour papers
I have a hundred legs but cannot stand a long neck but no head and I eat the maid's life. What am I?
I have a head, tail, but no arms and legs. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.