I am a Bears fan. And yes you are correct not all Green Bay fans are the worst. But based on everything I see daily you're in the minority. I even have friends who are realistic as fans and its welcomed. I enjoy football when you can base things off of facts and analysis. Not "I own the Packers so they are the best" "We're title town USA we're the best."
One of my favorite experiences with the GB fans, after offering up some of the buffet of food I paid for during the 49er vs Packers playoff game. (we were having a fantasy football party.) A lady started eating the food, I laughed because Clay Matthews was again beat by zone read and Kaep ran for a long TD. I was told I shouldn't be at the bar because I was not a Packer fan and I shouldn't be allowed to cheer for teams other than the Packers because I live in WI.
Granted this is during the time the lady, her friends and family are eating the food I was nice enough to offer because we had too much.
I told her Matthews SHOULDN'T be doing so many commercials if he can't figure out how to defend the zone read. At that point the lady spit at me, I moved in time and she missed. Her next attempt to spit at me dribbled out of her mouth. Real nice lady in her mid forties or fifties.
Also during the year the Packers won the Super Bowl, I was giving them their just do. I was talking to my friends that it was a hell of a run, a great game and they deserved the win after beating the Bears in the NFC Championship. In mid sentence someone at the bar who heard I wasn't a Packers fan poured an entire pitcher of beer over my head.
So my experiences with the fans are what I judge on. Again, not all fans are like that but the sample size I have dealt with is that the majority are.
