Of course this is what you do, but it's the biggest example of the state being evil, and everyone just goes along with it because they're bored or something.
Discussion
The underlying monetary issues are most likely the primary drivers, but I believe wars also serve to meet other pent up societal "needs", such as the need for meaning, the need for many people to take part in a titanic struggle and belong to a team.
It's a mind virus. We are outliers, I think.