Half Empty

Only half of the walls have pictures on them.
The other half are empty.

Only half of the bathroom counter space is taken up by anything.
The other half is empty.

Only half of the bedroom looks lived in.
The other half is empty.

There are two closets.
Only one is filled with trousers, shirts, shoes and ties.
The other one is empty.

Why are half the walls bare?
Why are the rooms half empty?
Why is one closet going unused?

For the same reason I only sleep on one half of my bed.
I'm just waiting for someone.
Someone to come and fill the empty space.