The book has lost none of its charm, but it would never get accepted for publication today because there's no real plot. The protagonist is years younger than the target reader, she doesn't have a goal and there's no villain or antagonist. While there are a few brief episodes of danger involving wild animals, even the forces of nature are more often helpful than not.
But just getting to know the characters and experience their day-to-day life was enough to keep me reading. Laura Ingalls Wilder did an excellent job of creating a realistic world, probably because it was the world she, herself, had experienced as a young child. This book is a great resource for kids learning about American history in school and a pleasure to read just for fun.