Most northern breeds have a great desire to roam, and most are aloof with people. For example, Siberian huskies are great escape artists. To keep huskies from escaping, their owners have been known to put up concrete and steel dog runs. Some of the breeds have predatory instincts, so they should definitely be supervised when they are around small animals and even babies, because when a baby cries, it can sound like injured prey to the dog.
Its a good idea to get these dogs involved in some kind of activity, because they have energy to burn. As long as the activity is fun and safe, huskies and malamutes will do well with drafting and sledding. It is advised that these dogs are socialized early and well, because some of these dogs are wary of strangers. The Northern breeds are independent, but they do affiliate strongly with other dogs, they are true pack animals and will be members of your pack as long as you establish your hierarchy early on.
Active families who have experience with dogs are perfect for the Northern breeds. If you hike, skijor, or bike, live in a cool climate, and have the time for training and exercise, a Northern breed would fit in very well in your lifestyle.