Dangers like the tornados that just destroyed so much property in NC could be avoided with this type of home. You wouldn't have to worry about leaks from water seaping into the soil because you can use high density concrete that will not let anything pass through it and of course drainage would be a major point in the basic construction.
Lighting would give the illusion of daylight and artificial windows could be fashioned with scenes that look like the outside. Some industrious individuals have even bought vacated silos that used to hold a missle and have fashioned a home there.
You might even recall the movie "Blast from the past" where this family thought world war 3 was about to happen in the late 60's or early 70's and actually lived in their underground home for 30 years with their little boy at that time. He was sent up to see about supplies and eventually brought his family up to live in a home above ground. I have seen it quite a few times. I still think the concept is interesting. What do you think?