Answer:
What can touch someone once and last them a lifetime?
What goes up and down the stairs without moving?
Something we eat, and misspell as meet.
Tall, I am young. Old, I am short. With life I glow. Anemoi is my foe.
Angels and pilots earn these.
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.