That was my whole point about losing the ethernet port. It's true that most people don't regularly use wired networking anymore, but many do, and of those who don't, a lot of them will have to use it at some point in a pinch -- maybe they want to directly connect to their wireless router if the wifi flakes out, maybe they want to transfer a bunch of files faster than 802.11n speeds, maybe they spend a night in a hotel and the wifi signal is shitty... whatever.

It's precisely for those people who have a sporadic need for wired ethernet that this decision is the worst, because though their need for it doesn't cross the "spend $30 for a dongle and carry it around with them" threshold, it's still nonzero. I rather like the idea of using a dock rather than having to plug in my power, display, ethernet, and USB jacks every morning and unplug them every evening, and having to use a dongle when I'm occasionally at a customer site isn't the worst thing in the world. But if I were in the plug in every month or two category, this would be infuriating.