Answer:
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
Has feathers but can't fly. Rests on legs but can't walk.
Snake coiled round and round. Snake deep below the ground. Snake that's never had a head. Snake that binds but not with dread.
Pirates put their booty in it.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.