Answer:
People want it, and when they have it, they use it by giving it
What never asks questions but receives a lot of answers?
It makes me warm and secure.
The more you take, the more you leave behind. What are they?
I saw the dead bring forth the living. I saw the living bring forth the dead. What did I see?
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.