What happens when someone cares about your Mac and its contents as much as you do? Happy happens!
When you are always connected, you want seamless integration. Maximize the cool features, minimize the annoying ones.
Is it a big iPhone or a keyboard-less Mac. Who knows, but it sure is light and powerful and you will always want it with you when you travel.
Apple knows how to pack in special features into all of its devices. The Airport Extreme is a Time Machine backup, the Airport Express streams music, Apple TV is a wireless display, the iPod is a phone and the Apple Watch can pay for stuff.