When you want to create your own event-driven components in Node.js, you can subclass the built-in EventEmitter class. By extending EventEmitter, you gain the ability to define and emit custom events that are specific to your application's needs.

This approach helps you organize your code by encapsulating event logic within dedicated classes, making it easier to manage complex event flows and interactions. Custom events allow you to signal when something important happens in your application, and listeners can respond to these events by executing specific code. Subclassing EventEmitter is a powerful way to create reusable, modular, and maintainable event-driven systems in Node.js.