So I'd like to add my input this.
I found a small group of Husker fans pre game and we ended up sitting in the student section together. We were in section p around the 5th row up (row ten, but there were a few removed rows). My experiences were as follows: Gameday: a few groups of people giving us the "A-hole" chant, but a really nice group of student (or young 20ish) fans who apologized for their colleges and were quite polite. About half way through, we switched sides (to stage right) where their seemed to be more Husker fans. On this side of the field, the badger fans were obnoxious at best, kept obnoxious jokes running too long and wouldn't shut up. Also one of this group blew smoke in a Husker fans face.
Gameday experience with badgers fans grade: C, some good fans some obnoxious fans.
After gameday, went to a bar kept on getting greeted by people (all 40 or older) all very nice, good conversation and pretty knowledgeable. There was good beer and no one hassled us, was quite enjoyable overall. We did have a number of people shouting things out of cars at us, usually related to sexuality or sucking. Obnoxious but not bad.
Pre-game experience: B, older fans were great, no one really bugging us.
Game experience in the student section. This was where I figured things would get bad, on the more tame side of things I was expecting the "A-hole" chant pretty regularly, I also was expecting a lot of the more screwed up stuff people had been talking about. While waiting in line about 2 hours before the game, I chatted up a UW student who proved to be really helpful. He explained which gates were good to go to and why, as well as a bunch of the schools traditions. We had one "A-hole" chant, but it was by a guy I was talking to, he said he felt obligated because we were opposing fans in their section, we laughed about it afterwards. Got into the section and low and behold everyone around us was really enjoyable. Spent the game talking to talking to just about every UW student around us, and none of them said anything bad. Even when the Huskers were up for a while, everyone was enjoyable, and asking questions about how we played. I think about 3 or 4 times during the game we got the "A-hole" chant, but we took it in stride (there were 6 husker fans in a row). I wish I had gotten the students names around us to say thanks, but whatever, wasn't really in the mood by the end of the game.
Overall: A, great experience, no complaints.
Postgame was a whole different story. Once we were out of the student section into the stadium, we had students intentionally running into us, and a lot of vitriolic insults and comments. This would be nothing compared to what we got walking to our friends house after the game. Walking by parties, we heard more of the same, go die, I hope your car crashes, lots of random pejoratives for homosexuality, and just general nastiness. Had a few guys try to provoke me into a fight despite me not saying anything to them.
Overall: F, this is where I really had problems, people should be a little graceful in victory, or at least not threaten people. At this point I was in a bad mood, and just plain tired, I didn't need that garbage.
So overall I think the problem is this. The younger (not just students, cause the students around me were great) fans get their jollies not by holding up their team, but by throwing sand in the eyes of the other teams fans. I by no means expect to have a red carpet rolled out for me, but I do expect some common human decency, something that I did not frequently see. I do want to give out a shoutout to student section P, overall really classy group of people, even after the game walking to the exit, I was able to just say congrats, good luck on the rest of your season and have them say the same.
Edit for typos and grammar. I'm really tired, just got back to Michigan.