Every gun that is made, every warship launched,
every rocket fired signifies in the final sense, a
theft from those who hunger and are not fed, those
who are cold and are not clothed. This world in
arms is not spending money alone. It is spending
the sweat of its laborers, the genius of its
scientists, the hopes of its children. This is not
a way of life at all in any true sense. Under the
clouds of war, it is humanity hanging on a cross
of iron.

- Dwight Eisenhower

tl;dr - War is hell boys.