Odd answer for me, potentially.
The team I dislike the most, unequivocally, is Ohio State. I was thrilled when they beat Miami for the NC years back, (although everyone knows Miami ate a bad call that left the door open for the Buckeyes.) Since then, I've been ardently anti-OSU. I hate, hate, HATE that team. Conversely: I really like the fans of the program I've come into contact with. They're knowledgeable, approachable, reasonable, and almost noticeably devoid of arrogance. This isn't a massive sample size I'm culling my opinion from, but I actually randomly was in Cleveland last weekend and met a bunch of OSU fans there, too. I made damn sure to wave the NU flag in OSU country, and I was approached by a good handful of Buckeye fans. All of them are unapologetic about OSU, meaning, they know they're good and they aren't afraid to acknowledge that. But it isn't boastful so much as predicated on hard fact and stats and referencing specific games. I'd honestly love to see Urban Meyer get exposed as the self-adulating douchebag he is, and I root against them every single time they play, but their fans are quality people from my interactions with them. Really, some of the best people to talk CFB with, at least in my experience.
Iowa fans are a bitter, unlikeable lot. I wish them lots of kidney stones and promiscuous daughters. Unlike the majority of OSU loyalists I've come across, many of their fans are delusional and are seemingly incapable of cordial discourse.
Penn State gets a strong nod, too. I'm sick of the makeshift memorial being placed where Paterno's statue was removed. Evidence strongly shows that a pedophile was enabled. It's not Penn State's fault as a community or university. There are bad people everywhere. But the whole, "the world is out to get us" thing is woefully misguided. Really, there was a guy "out to get, meaning, out to abuse children" and someone you all respected apparently did shockingly little to make sure the accusations were investigated to the fullest extent. That's reprehensible beyond description. Defiantly wear your Paterno shirts all you want., but just know that all you're doing is making the scar on your university a little darker for a little longer. Again: Penn State is not synonymous with that horrific crime. A small circle of people are responsible for what happened. You should despise them, not defend them. That baffles me.
I'd suggest rallying behind what O'Brien and your boys did this year. They deseve your support, which they do receive. But the guy some (many?) of you still revere? He turned his head, folded his hands, and averted his gaze while the sexual abuse of children occurred. We love football as much if not more than anyone here in Nebraska. I'd honestly bet enough money that would hurt if I lost it that if the situation were reversed, Husker fans would universally denounce someone who didn't do all they could stop a monster that was hunting in our own backyard.
I like Michigan. Bizarre. I always have. (Because I see a fair amount of similarities between us, and I know without a shadow of a doubt that '97 belongs to us, which is supported by the fact that we got the real trophy, and they got...like, a gift certificate to Denny's or something. Plus the love of Lee Barfknecht, which is like having the undying admiration of the Jonas Brothers or something equally flaccid.) And to clarify, it's a passive form of "like." I don't celebrate their wins or bemoan their losses by any means, especially now that we directly compete with them for the division. In fact, now I root against them, because a loss for them is a win for NU. And time may change my opinion. Mich fans seem to be unanimously reviled in B1G country. Maybe there is a good reason.