But those 'little things' are precisely the things that are generally cheap and easy to replace with the real thing, rather than some approximation made of resin. Sure there are old parts that are hard to find, but that alone probably won't justify everyone having the capacity to make their own. Jigsaws have been around forever, but not everyone has a one, and they can make a lot of things with more versatility in materials than a Makerbot.

I would agree that if there is a killer use for a Makerbot, it's probably something the device was never intended for.