How do you think your wireless signals get to the rest of the world? Microwave backhaul is almost dead, those cell towers (and there are tons of them in urban environments, partly for want of spectrum) are wired up with fiber.
Of course wired is used for backhaul between wireless nodes and the internet; but I'm speaking as a consumer technology. Wired access is definitely here to stay for infrastructure uses.
I use my phone for almost everything else: online shopping, communication, news consumption, even work since I tether my laptop to it when I'm on the go. It's a lot more convenient; and the only thing I really need high bandwidth for is media playback.