User blog comment:ImperiexSeed/Sam's NOT the hero of the show!/@comment-3481504-20160104193949/@comment-3423279-20160104233653

Are you sure? Dean is said to be Michael's true vessel and would've gone to him anyways.

With no one to try and stay alive for or stay strong for he probably would've been thrown into Hell and broken, resulting in all of this chaos anyways and having no one to try and fix it with the story would remain the same, just without a character who doesn't want to be dragged into a crazy world and live his own life.