Answer:
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Low on cash? Pick out items from this rack.
What word of five letters has only one left when two letters are removed?
Brings celebrities into your home every night.
Watches students at the prom to make sure there's no funny business.
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.