Not Taking Any Chances (Why Bother?)

How long will it take for you to see
My disinterest?
Why can't you understand that when
You speak, your words
Bounce off of me?
I deflect them like a shield.
Your words may not be meant to harm,
But this is my protection
Amassed in deflection—rejection—
No room for dissection.
Depart from me, you know it's in vain
Your efforts are futile.
They won't come to fruition, they 
Don't come to anything.
You know it only makes me mad,
So why bother?