Answer:
What is the end of everything?
What gets bigger the more you take away from it?
A big shiny black car nobody wants to be a passenger in.
What is the middle of water but is not an island?
Ch side by side, you are inside.
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.