Disasters, natural or self-imposed, do not help the economy

So, one of the big ideas that's completely wrong is that disasters like Hurricane Irma or WWII, or, forsooth! Afghanistan/Iraq/Syria/Yemen/Libya are good for the economy. Of course, they're good for sectors of the economy. But, rebuilding a house is not the same as building a new school. Supplying bombs to kill enemies is not the same as supplying scholarships for people to study how to keep people alive after clashes with cancer. None of this crap is any good most people. It's always better to invest than rebuild or destroy.