Keeping components pure in React is a fundamental principle that simplifies development, enhances performance, and improves maintainability. A pure function behaves consistently, making it predictable and easier to test. Pure components also optimize rendering, making them reusable and efficient. Strategies for maintaining purity include avoiding side effects, using React.memo, and managing state appropriately.

Source: https://dev.to/theonlineaid/pure-component-in-reactjs-acl