Yes, a family plan makes it cheaper. You won’t see any ads on your devices, from your TV to your PC, and you can listen to YouTube videos even when your phone is locked. It also includes YouTube Music. It’s a great deal, and I’m not sure why some people don’t see it that way. Sure, you could get a different YouTube client for your phone, install an ad blocker on your PC, block ads on your router to get rid them on your smart TV, and listen to music on Spotify for free. But the value of a good service is that you pay a reasonable amount of money and get all these features without any additional work on your part.