Not miss (something) for the world phrase spoken
Would definitely go to an event, see something etc.
"Will you attend the school's prom this year?" "I wouldn't miss it for the world."
I am a big fan of this actor. I won't miss his upcoming film for the world.
I can't miss any of his performances for the world.
The origin of this phrase is not clear.
To do domething based on your emotions rather than for rational reasons
I can't believe that Tom beat his classmate. He's always the one who let his heart rule his head.