Answer:
Built of metal or wood to divide. It will make us good neighbors, if you stay on your side. What is it?
A beautiful succession of sounds.
Some keep it in a dumpster while others keep it in their trunk.
What gives life and love, and is there till they die? What can hide you and find you, heal you and feed you but should never give up on you?
One strand dangles. Two strands twist. Three or more can fashion this.
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.