It's because I care about the Gophers first, plain and simple. Wisconsin losing helps us more than them winning does. We recruit directly against them. It's different with teams like Ohio St. and Michigan St., we don't battle with them very often, if ever. But we do with Wisconsin, Iowa, Nebraska, and Illinois.
The reputation of the Big Ten isn't what it once was, but it's still one of the top conferences in the country. WI losing doesn't affect that a whole lot.
I'd like to know how you came to this conclusion? I know WI and IA fans that would love it if we went 0-12. I know a Michigan fan who always says cheering for Ohio St. is like cheering for the Soviets. I highly doubt our fan base is any different than most others.