There are demons living amongst me

As I walk through my halls
Silent steps follow along
They invaded my home
And they won't leave me alone

They scream for attention
They I think I'm just a slave, not to mention
But I know I have the power here
I feed them, after all, every day of the year
They are quite large, I must confess
(And they always complain when they get anything less)

Little shadows in the night
Their eyes shine brightly in barely light
Sometimes they sit unseen
Waiting for me to trip on thee
They then accuse me for being cruel
They wail and wallow, dramatic souls
But that doesn't phase me
And they follow to do it again, you see

I would never think of exorcising them, however
It's not like I can, they are here forever
Not even as they sit on my chest
Crushing me as I lay to rest
If I wanted to move, I certainly can't
For no real reason except from their enchant
But there is one thing I can say if you prefer:
Who wants to move as they bask and purr?