Answer:
My first is equality; my second is inferiority; my whole is superiority.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
What starts with a 'T', ends with a 'T', and has T in it?
What never gets any wetter no matter how hard it rains?