Engagement reports help you learn what content is resonating with your audience. Here you can see what viewers are clicking, sharing, commenting, and promoting. You can also see how your cards and end screens are performing in your engagement reports. Cards and end screens reports help you learn what your audience is engaging with so you can optimize your calls-to-action in future videos.
I do not think this is how most people use YouTube. YouTube videos are more like blog posts, and fit more effectively into the niche of content marketing. Sure, people will comment—but they do so in a manner similar to how they comment on blog posts. They come to view and digest videos, not necessarily share their thoughts about the day. Because of this, you should approach YouTube as content marketing instead of social media marketing.