Well, former all-pro offensive lineman, Olin Kreutz had a very quick Tweet that really summarized the main problems on this year's Bears team.
Here is what he said:
This is the correct way of seeing this. This Bears' pass rush has literally been inexistent this year. It's extremely hard to stop opposing offenses when you can't put pressure on the quarterback. In fact, against the Packers, Aaron Rodgers was not hit a single time in the game. This is mind-boggling and it has to be the main focus for GM Ryan Poles this off-season.