Your age.
Age, the New Year, and space go up but never come down.
godAnswer:Riddle from my childhood - your age.
Stairs, you go up you go down but the stairs never move.
Our Age!
rain goes down, but never goes up actually it evaporates is transformed to water vapor goes into the clouds and eventually comes down as rain again (pixilated)
Your age.
The profit goes down when sales go up because either expenses go up too or price per item goes down.
Age
Your age
age
Your AGE!
The Sun.