it's gone
Examples
We don't appreciate what we have until it's gone. Freedom is like that. It's like air. When you have it, you don't notice it.
You know it's gone to hell, when the best rapper out there is a white guy and the best golfer is a black guy.
I started to sink like the moon tends to do if you stare at it too long Then you blink and it's gone.
You never value something as much as when it's gone.
Money is like down - one puff and it's gone.
Once the manioca is in your stomach it's gone.