A lot of people could make the same arguement. I'm from Wisconsin, about 45 min south of Greenbay. Ive got Road America and Blackhawk that I would consider "close" After that where do I go? Iowa or Indiana (have family there) probably. Can't really go to MI because of a lake in between me and the state of Michigan. I had to be honest with myself when I bought a track bike this winter for my first track days and realize that I picked the wrong sport to invest in if I'm going to complain about travelling and cost.
Also, it only makes sense to me that there aren't many tracks that far north. It surprises me Road America exists where it is. If I was going to build a track, I wouldn't build it in a place that gets too cold too fast.