My daughter is looking for a new Mac, so we compared the other day. I'd buy the new Macbook in a heartbeat over the current-model Airs. If I wanted more power than the Macbook can provide, I'd get a Pro. The single port isn't that big a deal, really. It doesn't need to sit on a charger all day thanks to battery life, AppleTV and Chromecast have replaced wired HDMI, and I almost never use more than one USB device at a time (and if you do, don't you have a hub lying around?).