I quit!

The end of an era has come,
I am backing out of the deal;
'Cause I can no longer stand,
Your ruthless license to kill.
I might have told you before,
A thousand times the least;
But you would not heed, you are
A blood-thirsty, heartless beast!
The covenant is broken:
This time is no empty vow,
Quit me, see me no more,
I quit you here and now.
I have a life to live;
Have your time to burn,
Enjoy your licensed murder,
On million others in turn.