Why do some Bears fans seem to think they can destroy the Packers?

I mean at least I get people who say a close win. They're Bears fans, you're supposed to cheer for your team. I see no way the Bears can get a crushing victory over the Packers. The Bears were doing well against the (7-9) Seahawks, but let them have a slight comeback and only won by 35-24 instead of a shutout. The Packers completely dismantled the number one seed in the NFC 48-21. I know we've seen some pretty incredible stuff this season, but isn't a Bears blowout over the Packers a bit too much to ask for?