Handling and displaying error states properly is essential for building robust React applications that gracefully handle failures and provide clear feedback to users. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented error handling in thousands of production components over 25 years of development. From my expertise, the most reliable approach is using useState to store error information and conditional rendering to display user-friendly error messages. This ensures users understand what went wrong and how they might resolve issues.