I think it's worth noting that the inventor of the earthship plans does not himself live in an earthship. I have seen a lot of anecdotal accounts of people living in earthships developing health issues because of off-gassing from the tires. Also they are really optimized for desert environments, they don't preform as well in high humidity.
When they filmed Garbage Warrior, Reynolds and his wife were occupying what he described as the first one "because it works". Have they since moved out?
