1. Minneapolis is easy to get around, and flat. I had to go downtown many days during my visit, and while there are busses, I opted to walk or bike since the weather couldn't have been nicer and I could enjoy the beautiful autumn air. Uptown (where Amy lives) is an easy distance of a beautiful cemetery, a number of lovely lakes, multiple fun bars/restaurants/cafes, and young people. Which brings me to #2.
2. Uptown is basically a grown up version of Carleton dorms. I swear half of all recent Carleton grads live in Minneapolis and most of them live in Uptown. That may be a bit of an exaggeration, but my point is that there is a very active Carleton community, and to be honest, I love hanging out with fellow Carls.
3. There are a lot people who want me there. This may seem like a silly reason, but so many people tried to persuade me to move there during my visit. One friend even threatened to break my legs so I couldn't leave.
Bonus Reason: The Summit Brewery is in St. Paul. And I love Summit Beer. Both times I visited and toured the brewery I had a great time, especially sitting in the sun with their free samples and friends enjoying it with me. You can't get Summit beer in California, a fact that makes me very sad.