It doesn't make them insane, but by God it makes some of them pretty darn stupid! Doug & Bob McKenzie were the prototypical dumb young Canadian men (remember the "Great White North"?), with their toques, their 26-word vocabulary, and their beer. Nothing has changed much, except that instead of toques, they now wear baseball caps backwards! Yuck!
As for Detroit, the reasons why we did not keep it are so obvious that I don't really think I need to list them. Detroit is hell on Earth.