We are all missing something.
We miss a pair of shoes, a lover in our bed, a someone who could have been our future. We miss the way the way he touched you, a holiday that didn't last long enough, a lost earring that would match your outfit. We miss a heart we used to have, a scar that you put there, another that was given to you by someone who never should have touched you. We miss our innocence, the games we used to play as kids. We miss smells of our childhood.
In the end what we miss doesn't matter.
It is still lost.