Technically it is not useless it still has some advantages which we are currently benefiting even until today the first if it is still why is it some of our firms here in our country are accepting bitcoin as mode of payment, and we can cash out our cash through them. Second is that I can still earned a lot money in bitcoin through trading if you wisely look at the move of the price of the market regularly, would something like that be useless. I think not. But I respect you opinion mate.
In this sense it is not useless, it can't be useless since it allows you to earn some bucks here and there or even make a living off it if you are lucky to have a good stash of coins. But right now it is all about speculation, and if speculation goes away, what will be left then? Where could you actually use your bitcoin? Some stores claim to be accepting bitcoin whereas they accept the same dollars or whatever. They don't accept bitcoin directly, they are just not interested in it.