Removing attributes from HTML elements is essential for cleaning up DOM state, disabling features, and managing dynamic element properties in JavaScript applications. With over 25 years of JavaScript development experience and as the creator of CoreUI, I regularly use attribute removal for form validation, accessibility updates, and component state management. The most reliable method is using the removeAttribute() method which completely removes the specified attribute from the element. This ensures clean DOM state and prevents issues with boolean attributes that might remain even when set to false.