If you have a slow connection, or you want to hide NSFW content on YouTube there is Music Mode for YouTube™ a Chrome extension that blocks the video and plays only the audio on YouTube and YouTube Music. Additionally, it skips the ads and hides the thumbnails (optional). So, you can convert YouTube into a music player. It helps you a lot to save bandwidth while you work or play games listening to music on the background and also reduce the use of RAM, CPU and GPU since there is no video. Finally, it helps you focus on your work and spend less time on YouTube clicking on clickbait thumbnails. Give it a try!