Disagree. It's accepted by two dozen merchants within a 30mi radius of my house, and that number is climbing. It's a currency, and tho it's primarily used as an investment vehicle right now, that will change as halvings continue until all coins have been mind. I believe it will transform into a widely accepted currency at that point. So, currently it's valuable as an investment vehicle, and as a currency. That's what it was intended to be, and so I don't think you can call it useless unless you also think other investment vehicles and currencies are useless.