Testosterone fuels both the plague of homo sapiens and employment.
The point of this blog is not to condemn warfare or unprincipled labour practices. Instead, I want to point out that since testosterone works so hard to make as many of us as possible, once we are here it has to find something for us to do. Warfare, huge engineering projects, and commercial exploitation are not likely to go away so long as there is not enough else to do. It is true that these sorts of things are also very popular with the extremely privileged because they offer such wonderful opportunities to augment their privilege.