According to Ian Rapoport of NFL.com:
To some, Smith's departure is unsurprising.
Chicago began each season with realistic Super Bowl expectations, but saw that hope diminish late in the year. Even worse was when the Bears came within one game of appearing in Super Bowl XLV.
Instead, Smith's squad fell to their long-time rival the Green Bay Packers at Soldier Field.
The 2010-11 season was Chicago's most recent postseason appearance, and after flopping during 2012's second half the Bears are moving on. As a result from Smith's firing, some will benefit and others simply will not.