Answer:
I grow up while growing down
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever. What am I?
First I may be your servant's name; then your desires I may proclaim; And when your mortal life is over hold all your wealth within my power.
The more you take of me the more you leave behind.
Santa shakes his belly like a bowl full of me
What is always coming but never arrives?