Several good reasons to write small user stories:

- They are easier to understand and estimate, which improves the accuracy of planning;
- They can be completed faster, which increases the team flexibility;
-They reduce the risk of dependencies, making development process more predictable;
-It makes it easier to identify and fix defects, which improves the overall quality of the product;
- They can make it easier to test and validate features, which can increase the confidence in the product.