While I agree with nearly all your post, to me the end seems overly optimistic: there are lots of technology which were supposed to be 'the future' which didn't

While I agree with nearly all your post, to me the end seems overly optimistic: there are lots of technology which were supposed to be 'the future' which didn't grow out the tinkerer/nerd phase. And IMHO, it's far too early to know whether 3D printing is the new computer or the new VR (well VR may change soon but for now it's nearly nothing).