Audio quality plays a very crucial role in the videos you shoot. Think from the perspective of a content creator who intends to publish quality, engaging and crisp videos to viewers. You wouldn’t want them to listen to hums, crackling noises, traffic commotion coming from outside your room, or other annoying noises.
Source: https://www.bestmaccleaner.com/how-to-remove-background-noise-from-video-on-mac/