As fast as our society in the US is decaying, I feel the need to get a house built sooner than later. This is why, instead of building what I really would like, a wofati or earthship, I'm now thinking of a major compromise...a half underground concrete block house with a super insulated roof. The pros are obvious....rot, fire, insect and wind proof; cooler in summer, warmer in winter. The only downsides I can think of are the cost and that its not exactly natural. Any others I'm missing? Thanks.