Forget about Jay Cutler or Mike Martz.
The Bears and Bear fans should really be infuriated because the team had everything it takes to win a Super Bowl and they squandered it.
To win championships -- in any sport -- being good is not sufficient.
You need to be healthy (every player was available at the start of the Packers game).
You need to be lucky (facing a 7-9 Seahawks team in the second round of the playoffs).
You need to get the calls (Calvin Johnson's TD catch nullified on opening day).
And, you need to get the bounces (Lance Briggs' interception off of Donald Driver's foot).
That's why championship seasons are so rare.