A couple of points here because I wasn't (necessarily) referring to Saban DYING so much as the fact that he is far more likely to worry about winning 2017 games than 2020 games.
Several coaches - Paterno, Bowden, Spurrier - have been mentioned but there's a key difference: NONE of those coaches was under anywhere near the pressure to win that Saban is, and they didn't coach in the SEC, either. Ok, Spurrier did BUT...he was at S Carolina. If he had been at Florida for the period of, say, 2002-2007, he'd have retired long ago. There's no pressure at SC comparably.
And while Saban wears his age better than so many others (he doesn't look like Tom Coughlin, for example), it's only a question of time. Bill Snyder can write his ticket at KSU. He built what they have and will be there until he chooses to not be there anymore.
Do we all agree that starting Cooper Batman for the Ole Miss game in 2015 was a mistake? No, it wasn't all his fault, but the perception of indecision could not possibly have helped the team chemistry and unity, either. Tua is a talent, but let's see what happens.
On a similar note: while nobody wishes it, there's no guarantee Jalen does NOT get hurt. We have a MOBILE quarterback and teams like to take shots at those to cripple them for the game. Things happen in football. One could easily argue that the injuries of Eddie Jackson and Bo Scarborough are the difference between us being 2-0 against Clemson the last two years as opposed to 1-1. (We could throw SD Harrison in there, too).