Answer:
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
When set loose I fly away. Never so cursed as when I go astray.
I am easy to see but no one likes looking at me. Without me there would be no you. I can make you complain or make you happy. But you almost always take me for-granted.
I have cities with no people forests with no trees and oceans with no water.
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
Ripped from my ancestors home beaten and burned I become a bloodthirsty killer.