WMG: Vince McMahon

Satan fears Vince, not the other way around.
The Devil knows that if Vince shows up in Hell, his first action will be to buy the place and turn Satan into a Jobber or a road agent or some other insignificant role. You know that old line, "Heaven doesn't want me and Hell's afraid I'll take over?" That's Vince. To him, Hell is just another territory. After all, the song "No Chance In Hell" is directed toward whoever Vince is feuding with at a given time.
There is a kayfabe reason for the Montreal Screwjob.
Outside of kayfabe, the reason for Montreal is pretty clear, which was Vince fearing Bret going to WCW with the WWF Heavyweight belt. But one could spin a kayfabe reason for the screwjob: Simply put, Vince finally snapped! After all, he started to receive more and more abuse in 1997. Not only was he shoved and called out by Bret Hart over the course of the year, but he was also stunned by "Stone Cold" Steve Austin. The rise of D-Generation-X further added to the impression that he was losing more and more of his authority. Worse, even his "puppets" (Whom he installed in order to exert control over the WWF roster, while staying more or less anonymous in his commentary position) like Gorilla Monsoon or Sgt.Slaughter were losing authority. So Bret Hart leaving for WCW (Switching over to your competition may very well count as kayfabe.) was the final straw for Vince and in order to reestablish his authority, he decided to screw over Bret in his final match, while at the same time finally appearing as the "true" boss.

Vince will run WWE until the day he dies
He shows little, if any signs of slowing down apart from making fewer televised appearances and many of his closest friends and family members have said that he has no life outside of wrestling. So for those of you who are eager for Hunter and Steph to take over, it probably won't happen as long as Vince is still alive and able to run the promotion.