Sorry about the delay in my response, but I was busy watching the Steelers play. I'm a bit surprised at the results of my poll. I figured a lot more people would disagree with me, based on the fact that I think most people are for whatever works 99% of the time. But the FFA, those both for and against, seem to be a more thoughtful crowd than your average football fan, and I appreciate the feedback.
Joe Bryant asked why I thought the move was stupid. In retrospect, stupid was an incorrect and rather arrogant choice of words, because it implies that I know more about football than Mike Shanahan, which is certainly not even close to being true in any way. What I should have written was, in my opinion it was the wrong choice. In fairness to Shanahan, I write this from the security of my couch after the fact. But I still hold this opinion.
There seems to be some disagreement here about what the percentages are for making a 2 point conversion: some say it's over 50%, some say under. The point is, if you fail, you almost certainly lose the game. Even a 45% chance to lose in one play is too much of a risk. I know people will argue that he's playing to win and I'm playing not to lose, but my position is more complex than that. Let's say you kick the extra point. Then you go to OT where you get a 50% chance at the coin flip. Even if you lose the coin flip, the Chargers still have to drive the ball down the field. Even if they do drive the ball down the field, they still have to punch it in or kick a FG to win. So many things can go wrong for the Chargers and right for the Broncos, that I believe it makes much more sense to play it safe.
The key for me is, it's one play versus many plays. So long as the percentages are close (and nobody has argued otherwise) the risks are magnified from the one play and lessened by the many plays. Someone brought up Tom Osborne, and I always admired him for going for 2. But there was no OT in college football then. Had there been OT, even sudden death, he would not have gone for 2, at least IMO.