I agree this is an AND situation, and to many of my fellow home-edders have gone for 'or' and are in a more unschooling than home-schooling situation.
The issue for me in this is Supervision (which I define as distinct from 'authority' - the latter is dictating the story, the former is one who sees something the other cannot yet).
But you have hit the nail upon the head as to where the answer is : to trust in life, or not.
Prescriptive education does not trust life to present the child with exactly what it needs for a future we cannot see.
Unschooling does.
Home Ed lies somewhere in between...(nervously, in my case)
RE: RE: Children should be allowed to learn whatever they want instead of having set classroom subjects. Yay or Nay?