Answer:
We travel much, yet prisoners are, and close confined to boot. Yet with any horse, we will keep the pace, and will always go on foot.
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
The more you take, the more you leave behind.
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
What has a neck and no head, two arms but no hands?
The warmer I am the fresher I am.