I've possessed a Kirsten since age 4.
You probably got Kirsten because she was blond, or because you read a lot of Little House on the Prairie books...
Whatever superficial motivation led you to choose Kirsten, you quickly learned that life as a Swedish immigrant in Minnesota is not all lingonberry pie and ice fishing. Not halfway through the first book does Kirsten's best friend Marta die suddenly and tragically of cholera. This was shocking and horrifying. Obviously, you were used to cholera deaths (this being the age of Oregon Trail), but this time it was different.
You therefore grew up to be a bit more thoughtful, a bit more reserved than your peers. You also find yourself inexplicably drawn towards crafts like knitting, jam-making, and quilting. You secretly suspect that you'd manage just fine in a post-Apocalyptic setting, should things come to that. You were surprised and delighted to see some of Kirsten's outfits come back into style in certain enclaves of Brooklyn.