Oh, and another thing about this whole post human future debate and a future with no need for us: The human brain is remarkable and highly complex, engineerable or not. I fully subscribe to Steve Mann's point of view, as expressed in his notion of humanistic intelligence:
Rather than trying to emulate human intelligence, HI recognizes that the human brain is perhaps the best neural network of its kind, and that there are many new signal processing applications, within the domain of personal technologies, that can make use of this excellent but often overlooked processor.
I've quoted this before but it is worthwhile repeating again.

If the David Weinberger's and the Steve Talbott's of the world will bear with Mann's nerdy reference to the brain as a processor (and yes, I know that this is exactly what you think is a problem), what he is actually saying is that technology and science will rely on our selves and our minds if for no other reason, then because it is the practical thing to do.

In short, the future very much needs us, and it will belong to us.