I totally agree that it is not for everybody, but I think there is a place for it and think there should be fewer barriers .

I've seen a few people quoted more than 500K for PG&E to run power to their house. That can buy a lot of redundancy and peace of mind. Similarly, many cities have power outages longer than 24 hours on an annual basis in California. At this point most people in my neighborhood have gas generators for when the grid goes out.