Most of the time they don't bring anything good to discuss and half of those comments are either dumb questions, music snobs, people thinking the illuminati is some sort of evil organization, more dumb questions, racists, people thinking their music taste matters.
Of course. That's possibly the worst place to read comments. They will turn ANY video into a debate about religion, race, or sexuality. You have to give it up to them to somehow be offended by the slightest thing ever.
I don't think there is any good youtube comments anymore. They're all moronic, randomly bringing religion up when the video has nothing to do with it, complaining endlessly about the video they watched/the uploader, or just plain sexist/racist/homophobic. I haven't written a youtube comment in so long because I just don't see a point