I'm buying 1-2 refurbished current gen Macbook Pros, and just hoping those and my current one will last me the next decade or so (its all solid state, so hopefully it will).
I think Steve Gibson (SpinRite guy) mentioned that he has a freezer drawer full of Palm Pilot PDAs, that seemed a good idea at the time.
* USB
* Not needing a $25 adapter just to charge my iPhone
* Thunderbolt for my two Thunderbolt displays
Hopefully the used supply of MBP will stay deep for years.
http://www.apple.com/shop/product/MK0X2AM/A/usb-c-to-lightni...
Seriously though the next iPhone/iPad will surely going to use USB-C also and ditch Lightning, which will dramatically simplify the connector situation going on at Apple.