User blog comment:KillRoy231/What Dean should have done about the Mark/@comment-73.203.199.6-20160924030312

Passing the mark on to an ancient monster that is already stronger than angels, or an old and powerful witch would be simply empowering them, making them ore of a threat. Yeah, they'd be in another dimension, but eventually, they would escape, and have gotten stronger during their time away. I also feel like Dean didn't want anyone else to have that kind of power, like he didn't want Sam to do the 3 trials of God. He feels it's his responsibility to contain the power and save the world.