Perhaps not exactly what you're talking about, but a bot has "changed my life", if you'd put it that way. I built an internet radio station with some friends, and we use an IRC bot to control it. I almost completely ditched any other way of consuming music - using the bot to search our library, request songs, interact with our music as a group - is much better than any other music interface I've used. I think most people just don't have the right use-cases - but it is possible and worth trying.