This!!!!
Building an Earthship on a piece of cheap land is also my absolute dream. I dont understand how this housing model isn't already the mainstream way since it's just so much more superior than square brick houses.
An earthship is the closest modern home you can get from a Hobbit Hole. And who doesnt want to live in a Hobbit Hole with Solar power and natural air conditioning.
Narrow commercial interests I guess :) .......and yes, how truly wonderful such a natural Hobbit Hole would be to live in!